Jaime is cutting shapes out of cardboard to make a piñata. One of the shapes is shown in a
coordinate grid

c. (0,10)
d. (3,2)
e. (9,0)
f. (3,-2)
g (0,-10)
h. (3,-2)
a. (-9,0)

(it’s the shape of a star)

What is the length of side AB? Round your answer to the nearest tenth of a unit.
Show your work.

Jaime Is Cutting Shapes Out Of Cardboard To Make A Piata. One Of The Shapes Is Shown In Acoordinate Gridc.

Answers

Answer 1

The length of side AB is 6.3 units.

How to find the length of side AB

The length of side AB is solved using the distance formula below

AB = √((x₂ - x₁)² + (y₂ - y₁)²

where

(x₁, y₁) = (-9, 0) and

(x₂, y₂) = (-3, 2).

AB = √((-3 - (-9))² + (2 - 0)²)

AB = √(6² + 2²)

AB = √(40)

AB = 2√(10)

AB = 6.3245

AB = 6.3 to the nearest tenth

Therefore, the length of side AB is 6.3 units.

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Related Questions

A wheatfarmer is converting to com because he believes that com is a more lucrative crop. It is not feasible for him to convert all his creace to com at onceHe is farming 100 acres of com in the current year and is increasing that number by 30 acres per year. As he becomes more experienced in growing com his output increas. He currently harvests 130 buhof com per acre. But the yield be increasing by buhol per acre per year. When both the increasing berage and the increasing yield are considered, how rapidly Withe total number of but of corn currently increasing bushes per year

Answers

The rate at which the total number of bushels of corn currently increases per year depends on the value of "b", which represents the annual increase in yield per acre. If the yield per acre is not increasing (i.e., b = 0), then the rate of increase is a constant 1300 bushels per year.

Let's call the total number of acres the farmer is farming in corn in a given year as "a". We know that initially, a = 100 acres, and that it increases by 30 acres per year. So, in general:

a = 100 + 30t

where "t" is the number of years since the farmer started converting to corn.

Now, let's call the yield in bushels per acre in a given year as "y". We know that initially, y = 130 bushels per acre, and that it increases by "b" bushels per acre per year. So, in general:

y = 130 + bt

Finally, we can calculate the total number of bushels of corn produced in a given year by multiplying the number of acres by the yield per acre:

bushels per year = a * y

Substituting the expressions we have for "a" and "y", we get:

bushels per year = (100 + 30t) * (130 + bt)

Expanding this expression, we get:

bushels per year = 13000 + 1300t + 3900bt + 30tb

Now we can differentiate this expression with respect to time to find how rapidly the total number of bushels of corn currently increases per year:

d(bushels per year)/dt = 1300 + 3900b + 30b

Simplifying, we get:

d(bushels per year)/dt = 1300 + 3930b

So the rate at which the total number of bushels of corn currently increases per year depends on the value of "b", which represents the annual increase in yield per acre. If the yield per acre is not increasing (i.e., b = 0), then the rate of increase is a constant 1300 bushels per year. If the yield per acre is increasing, then the rate of increase will be greater than 1300 bushels per year, and the rate of increase will depend on the value of "b".

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Which of these contexts describes a situation that is an equal chance or 50-50?
A. Rolling a number between 1 and 6 (including 1 and 6) on a standard six-sided die, numbered from 1 to 6.

B. Spinning a spinner divided into four equal-sized sections colored red/green/yellow/blue and landing on yellow or blue or green.

C. Winning a raffle that sold a total of 100 tickets if you bought 50 tickets.

D. Reaching into a bag full of 5 strawberry chews and 15 cherry chews without looking and pulling out a strawberry chew. ​

Answers

option B  describes a situation that is an equal chance or 50-50

Option A describes a situation that is not 50-50 because there are six possible outcomes and only one of them is desired, so the probability of rolling a particular number is 1/6.

Option B describes a situation that is 50-50 because there are four possible outcomes and two of them are desired, so the probability of landing on a desired color is 2/4 or 1/2.

Option C does not describe a situation that is 50-50 because the probability of winning depends on the number of tickets sold and the number of tickets purchased by the individual.

Option D describes a situation that is not 50-50 because there are 5 strawberry chews and 15 cherry chews, so the probability of pulling out a strawberry chew is 5/20 or 1/4.

Therefore, the only option that describes a situation that is an equal chance or 50-50 is option B.

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Need this fast
consider the function whose criterion is f(x) = x3 =2x² +5 If the equation of the tangent line to fat x = -2 has the forma S y = mx +D m and b? ? What is the value for

Answers

The equation of the tangent line y = 20x + 61, with m = 20 and b = 61.

How to the equation of the tangent line to a function at a specific point?

To find the equation of the tangent line to the function [tex]f(x) = x^3 - 2x^2 + 5 at x = -2[/tex], we need to first find the slope of the tangent line at that point.

To do this, we can take the derivative of the function f(x), which gives us:

[tex]f'(x) = 3x^2 - 4x[/tex]

Then, we can plug in x = -2 to find the slope at that point:

[tex]f'(-2) = 3(-2)^2 - 4(-2) = 20[/tex]

So the slope of the tangent line at x = -2 is 20.

Now we can use the point-slope form of a line to find the equation of the tangent line. We know that the line passes through the point [tex](-2, f(-2))[/tex], which is (-2, 21) since:

[tex]f(-2) = (-2)^3 - 2(-2)^2 + 5 = 21[/tex]

So the equation of the tangent line is:

[tex]y - 21 = 20(x + 2)[/tex]

Simplifying this equation gives us:

y = 20x + 61

Therefore, the equation of the tangent line in the form y = mx + b is:

y = 20x + 61, with m = 20 and b = 61.

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1. consider the pyramid.


(a) draw and label a net for the pyramid.


(b) determine the surface area of the pyramid. show your work.


(pyramid is listed in the pdf)


2. the back of nico’s truck is 9.5 feet long, 6 feet wide, and 8 feet tall. he has several boxes of important papers


that he needs to move. each box of papers is shaped like a cube, measuring 1.5 feet on each side.


how many boxes of papers can nico pack into the back of his truck? show your work.



please help!

Answers

A net for the pyramid is drawn and labeled. The surface area of the pyramid is found using the formula and the given measurements is 96 square units. The number of boxes of papers Nico can pack into the back of his truck is 135 boxes.

The labeled pyramid is shown in image.

To find the surface area of the pyramid, we need to find the area of each face and add them together. The area of the base is a square with side length 6, so its area is

6² = 36 square units.

The area of each triangular face can be found by using the formula for the area of a triangle, which is 1/2 times base times height.

The height of each face is the slant height of the pyramid, which we can find using the Pythagorean Theorem.

The base of each face is one of the sides of the base of the pyramid, which has length 6.

The slant height of the pyramid can be found by drawing the height from the apex to the center of the base and then using the Pythagorean Theorem to find the length of the hypotenuse of the right triangle formed by the height, half the base (3), and the slant height. We get

slant height = √(4² + 3²) = 5

So the area of each triangular face is 1/2 times base times height = 1/2 times 6 times 5 = 15 square units. Since there are four triangular faces, the total surface area of the pyramid is

4(15) + 36 = 96 square units.

Therefore, the surface area of the pyramid is 96 square units.

The volume of one box of papers is 1.5 x 1.5 x 1.5 = 3.375 cubic feet. The volume of the truck is 9.5 x 6 x 8 = 456 cubic feet. The number of boxes Nico can pack into the truck is therefore

456 / 3.375 = 135.11

Since Nico cannot pack a fraction of a box, he can fit a maximum of 135 boxes of papers in his truck.

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Given y = 5x^2 + 3x, find dy/dx when x = - 1 and dx/dt =5. dy/dt = (Simplify your answer.)

Answers

To dy/dx when x = - 1 and dx/dt =5. dy/dt =

dy/dt = -35.

To find dy/dt, first we need to find dy/dx. Given y = 5x^2 + 3x, we can differentiate y with respect to x:

[tex]dy/dx = d(5x^2 + 3x)/dx = 10x + 3[/tex]
Now, we need to find dy/dx when x = -1:

[tex]dy/dx(-1) = 10(-1) + 3 = -10 + 3 = -7[/tex]
We are given that dx/dt = 5. To find dy/dt, we use the chain rule:

[tex]dy/dt = dy/dx * dx/dt[/tex]

Substitute the values we found:

dy/dt = (-7) * (5) = -35

So, dy/dt = -35.

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Given △ABC where AC = 7 cm, BC = 7 cm, and AB = 7 cm, then the ∠B=?

Answers

The measure of angle B is 60 degrees. The given triangle ABC is an isosceles triangle since two sides, AC and BC, are equal in length to 7 cm.

Therefore, the angle opposite the base (AB) will be equal in measure.

To find the measure of angle B, we need to use the cosine rule, which relates the length of sides of a triangle to the cosine of the angle opposite the side.

According to the cosine rule, cos(B) = ([tex]a^{2}[/tex] + [tex]c^{2}[/tex] - [tex]b^{2}[/tex]/(2ac). Substituting the values, we get cos(B) = ([tex]7^{2}[/tex] + [tex]7^{2}[/tex] - [tex]7^{2}[/tex])/(2x7x7), cos(B) = 1/2, B = [tex]cos^{-1}[/tex](1/2), B = 60°

Therefore, the measure of angle B is 60 degrees.

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find the area of a garden that measures 6 feet by 4 feet.

Answers

Answer:

Area = Length x Width

Area = 6 feet x 4 feet

Area = 24 square feet

Due to the annual rate of inflation, a gallon of milk that costs $3. 25 today would have cost $1. 75 if it was bought 20 years ago.

Answers

The annual rate of inflation between the two time periods is approximately 3.05%.

To calculate the annual rate of inflation, we can use the formula:

Annual Inflation Rate = ((Current Price - Past Price) / Past Price) * 100 / Number of Years

Plugging in the values, we have:

((3.25 - 1.75) / 1.75) * 100 / 20 ≈ 0.153 * 100 / 20 ≈ 3.05%

Therefore, the annual rate of inflation between the two time periods is approximately 3.05%.

Inflation refers to the general increase in prices over time, which leads to a decrease in the purchasing power of money. In this case, the cost of a gallon of milk has increased from $1.75 to $3.25 over 20 years. By calculating the annual rate of inflation, we find that prices have been rising at an average rate of 3.05% per year during this period.

This means that the cost of goods and services, including milk, has increased by an average of 3.05% each year due to inflation. It highlights the importance of considering inflation when comparing prices and understanding the impact it has on the value of money over time.

In conclusion, based on the given information, the annual rate of inflation between the two time periods is approximately 3.05%, indicating the increase in the cost of a gallon of milk over 20 years.

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Researchers in scotland have been following the development of a sample of 11-year-old children since 1932. what type of study are they conducting

Answers

In this case, the researchers have been following the development of a sample of 11-year-old children since 1932, which is a very long period of time, making it a classic example of a longitudinal study

The type of study that the researchers in Scotland are conducting is a longitudinal study. Longitudinal studies involve following a group of individuals over an extended period of time, often years or even decades, in order to observe changes or continuity in their development, behaviors, or other characteristics.Longitudinal studies are considered to be one of the most powerful research designs for understanding how individuals change over time. By following a group of people over an extended period, researchers can gain insight into how different factors, such as social, environmental, and biological, interact to shape development.

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Students in a class were surveyed about the number of children in their families. The results of the survey are shown in the table. Two surveys are chosen at random from the group of surveys. After the first survey is chosen, it is returned to the stack and can be chosen a second time. What is the probability that the first survey chosen indicates four children in the family and the second survey indicates one child in the family?.

Answers

The probability that the first survey indicates four children in the family and the second survey indicates one child in the family is 1/50.

We have,

To find the probability of the first survey indicating four children in the family and the second survey indicating one child in the family, we need to consider the number of surveys that fit this condition and divide it by the total number of possible surveys.

According to the table, the number of surveys indicating four children in the family is 8, and the total number of surveys is:

= 9 + 18 + 22 + 8 + 3 = 60.

Since the first survey is returned to the stack and can be chosen again, the probability of the first survey indicating four children in the family is 8/60.

For the second survey, there are 9 surveys indicating one child in the family (as the first survey is returned to the stack and can be chosen again), and the total number of surveys remains 60.

Therefore, the probability of the second survey indicating one child in the family is 9/60.

To find the probability of both events occurring, we multiply the individual probabilities:

Probability = (8/60) x (9/60) = 72/3600 = 1/50

Thus,

The probability that the first survey indicates four children in the family and the second survey indicates one child in the family is 1/50.

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The complete question:

Number of children in family     Number of surveys

one                                                      9

tqo                                                     18

three                                                  22

four                                                      8

five or more                                        3

Verify that the function f(x) = -4x^2 + 12x - 4ln x attains an absolute maximum and absolute minimum on
[1/2,2].
Find the absolute maximum and minimum values.

Answers

To verify that the function f(x) = -4x^2 + 12x - 4ln x attains an absolute maximum and absolute minimum on [1/2,2], we can use the Extreme Value Theorem.

First, we need to check if the function is continuous on the interval [1/2,2] and differentiable on the open interval (1/2,2).

The function is continuous on [1/2,2] because it is a polynomial and the natural logarithm function is continuous on its domain.

To check if it is differentiable on (1/2,2), we need to take the derivative:

f'(x) = -8x + 12 - 4/x

This is defined and continuous on the open interval (1/2,2).

Now we can find the critical points by setting f'(x) = 0:

-8x + 12 - 4/x = 0

Multiplying both sides by x and rearranging, we get:

-8x^2 + 12x - 4 = 0

Dividing by -4, we get:

2x^2 - 3x + 1 = 0

This factors as (2x - 1)(x - 1) = 0, so the critical points are x = 1/2 and x = 1.

We also need to check the endpoints of the interval:

f(1/2) = -4(1/4) + 6 - 4ln(1/2) = 2 - 4ln(1/2)

f(2) = -4(4) + 12(2) - 4ln(2) = 8 - 4ln(2)

Now we can compare the function values at the critical points and endpoints to find the absolute maximum and minimum:

f(1/2) = 2 - 4ln(1/2) ≈ 5.39

f(1) = -4(1) + 12(1) - 4ln(1) = 8

f(2) = 8 - 4ln(2) ≈ 0.31

So the absolute maximum value is 8, which occurs at x = 1, and the absolute minimum value is 0.31, which occurs at x = 2.

Therefore, the function f(x) = -4x^2 + 12x - 4ln x attains an absolute maximum and absolute minimum on [1/2,2], and the absolute maximum value is 8 and the absolute minimum value is 0.31.
To verify that the function f(x) = -4x^2 + 12x - 4ln(x) attains an absolute maximum and minimum on the interval [1/2, 2], we will first find its critical points by taking the first derivative and setting it to zero, and then evaluate the function at the critical points and endpoints.

The first derivative of f(x) is:

f'(x) = -8x + 12 - 4/x

Setting f'(x) to zero, we have:

-8x + 12 - 4/x = 0

Multiplying by x to remove the fraction, we get:

-8x^2 + 12x - 4 = 0

Dividing by -4, we have:

2x^2 - 3x + 1 = 0

Factoring, we get:

(x-1)(2x-1) = 0

This gives us the critical points x = 1 and x = 1/2.

Now, we evaluate f(x) at the critical points and endpoints:

f(1/2) = -4(1/2)^2 + 12(1/2) - 4ln(1/2)
f(1) = -4(1)^2 + 12(1) - 4ln(1)
f(2) = -4(2)^2 + 12(2) - 4ln(2)

Calculating these values, we get:

f(1/2) ≈ 5.386
f(1) = 4
f(2) ≈ -4

The absolute maximum value is ≈ 5.386 at x = 1/2, and the absolute minimum value is ≈ -4 at x = 2.

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Let u= (3, -7) and v = (-3.1). Find the component form and magnitude (length) of the vector 2u - 4v.

Answers

I think there might be a typo in the question - it looks like there's a missing second coordinate for vector v. Assuming that the second coordinate for v is also -7, here's the solution:

First, let's find the component form of 2u - 4v:

2u = 2(3,-7) = (6,-14)
4v = 4(-3,-7) = (-12,-28)

So 2u - 4v = (6,-14) - (-12,-28) = (6+12, -14+28) = (18,14)

Therefore, the component form of 2u - 4v is (18,14).

To find the magnitude of (18,14), we can use the Pythagorean theorem:

|(18,14)| = sqrt(18^2 + 14^2) = sqrt(360) ≈ 18.97

So the magnitude (length) of the vector 2u - 4v is approximately 18.97.
To find the component form of the vector 2u - 4v, we'll first perform scalar multiplication and then vector subtraction.

Scalar multiplication:
2u = 2(3, -7) = (6, -14)
4v = 4(-3, 1) = (-12, 4)

Vector subtraction:
2u - 4v = (6, -14) - (-12, 4) = (6 + 12, -14 - 4) = (18, -18)

So, the component form of the vector 2u - 4v is (18, -18).

To find the magnitude (length) of the vector, we'll use the formula: ||2u - 4v|| = √(x² + y²), where x and y are the components of the vector.

Magnitude = √((18)² + (-18)²) = √(324 + 324) = √(648) ≈ 25.46

The magnitude (length) of the vector 2u - 4v is approximately 25.46.

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if tanA=squareroot3-1/squareroot3+1,prove that cosA=squareroot3+1/2squareroot2.

Answers

The exact value of the trigonometric function is cos θ = (√3 + 1) / 2√2.

How to find the exact value of a trigonometric function

In this problem we find the exact value of a trigonometric function, from which we need to determine the exact value of another trigonometric function. This can be done by using definitions of trigonometric functions:

tan θ = y / x

cos θ = x / √(x² + y²)

Where:

x - Leg adjacent to an angle.y - Leg opposite to an angle.θ - Angle.

If we know that y = √3 - 1 and x = √3 + 1, then the exact value of the other trigonometric function is:

cos θ = (√3 + 1) / √[(√3 + 1)² + (√3 - 1)²]

cos θ = (√3 + 1) / √(3 + 2√3 + 1 + 3 - 2√3 + 1)

cos θ = (√3 + 1) / √8

cos θ = (√3 + 1) / 2√2

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We can calculate the depth � dd of snow, in centimeters, that accumulates in Harper's yard during the first ℎ hh hours of a snowstorm using the equation � = 5 ℎ d=5hd, equals, 5, h. How many hours does it take for 1 11 centimeter of snow to accumulate in Harper's yard? 1/5 hours How many centimeters of snow accumulate per hour?

Answers

It takes 1/5 hours or 12 minutes for 1 centimeter of snow to accumulate in Harper's yard.

We are given that the depth of snow that accumulates in Harper's yard during the first h hours of a snowstorm is given by the equation d = 5h.

To find out how many hours it takes for 1 centimeter of snow to accumulate, we need to find the value of h when the depth of snow d is equal to 1 centimeter.

Substituting d = 1 in the equation d = 5h, we get:

1 = 5h

Dividing both sides by 5, we get:

h = 1/5

In summary, the equation d = 5h gives the depth of snow in centimeters that accumulates in Harper's yard during the first h hours of a snowstorm. To find how many hours it takes for 1 centimeter of snow to accumulate, we substitute d = 1 and solve for h, which gives us h = 1/5 hours or 12 minutes.

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Complete question is:

We can calculate the depth d of snow, in centimeters, that accumulates in Harper's yard during the first h hours of a snowstorm using the equation d = 5h. How many hours does it take for 1 centimeter of snow to accumulate in Harper's yard?

write a math sequence for this problem! lilah and her little brother max went to the beach they dug 290 seashells and 645 rocks how many rocks and seashells did max and lilah collect in all?

Answers

Answer:

935 Rocks and shells

Step-by-step explanation:

To find the total number of rocks and seashells collected by Max and Lilah, we can use the addition operation. Let S be the number of seashells and R be the number of rocks. Then, the math sequence for this problem is:

S + R = Total

Substituting the given values, we get: 290 + 645 = Total

Simplifying the right-hand side, we get:

935 = Total

Therefore, Max and Lilah collected a total of 935 rocks and seashells in all.

To find the total number of rocks and seashells collected by Lilah and Max, we simply need to add the number of seashells and rocks they each collected. Let S represent the number of seashells and R represent the number of rocks. Then, the equation is:

S + R = 290 + 645

Simplifying this expression, we get:

S + R = 935

935 rocks and seashells.

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The masses mi are located at the points P. Find the center of mass of the system. mi = 4, m2 = 8, m3 = 9. P1 = (-6, - 8), P, = (3, 1), P3 = (6,2). c= IS

Answers

To get the center of mass of the system with masses m1 = 4, m2 = 8, and m3 = 9 located at points P1 = (-6, -8), P2 = (3, 1), and P3 = (6, 2), the center of mass of the system is approximately (2.57, -0.29).


Center of Mass (x, y) = (Σ (mi * xi) / Σ mi, Σ (mi * yi) / Σ mi)
First, find the sum of the masses: Σ mi = m1 + m2 + m3 = 4 + 8 + 9 = 21
Next, calculate the x and y coordinates of the center of mass: Σ (mi * xi) = (4 * -6) + (8 * 3) + (9 * 6) = -24 + 24 + 54 = 54,
Σ (mi * yi) = (4 * -8) + (8 * 1) + (9 * 2) = -32 + 8 + 18 = -6.
Now divide these sums by the total mass: x-coordinate = 54 / 21 ≈ 2.57, y-coordinate = -6 / 21 ≈ -0.29.
So, the center of mass of the system is approximately (2.57, -0.29).

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Mind-Set Matters In 2007 a Harvard psychologist set out to test her theory that ‘‘Mind-Set Matters. "1 She recruited female maids2 working in different hotels to participate in her study, and informed maids (randomly chosen) that the work they do satisfies the Surgeon General’s recommendations for an active lifestyle (which is true), giving the maids examples on how their work qualifies as good exercise. The other maids were told nothing. After four weeks, the exercise habits of the two groups had not changed, but the informed group had lost an average of lbs () and the uninformed group had lost an average of lbs (). The data are stored in MindsetMatters. Based on this study, does ‘‘Mind-Set Matter"? In other words, for maids, does simply thinking they are exercising more actually cause them to lose more weight?

Answers

Based on study, it appears that mind-set does matter for maids in terms of weight loss - simply thinking they are exercising more may have led to greater weight loss in the informed group.

To determine whether mind-set matters in terms of weight loss for the maids, we need to conduct a hypothesis test.

Null Hypothesis: The average weight loss for the informed group of maids is equal to the average weight loss for the uninformed group of maids.

Alternative Hypothesis: The average weight loss for the informed group of maids is greater than the average weight loss for the uninformed group of maids.

We can use a one-sided t-test to test this hypothesis, since we are interested in whether the informed group lost more weight than the uninformed group.

Using the data provided, we can calculate the sample mean and standard deviation for each group:

Informed group:

Sample size (n) = 44

Sample mean = 2.00 lbs

Sample standard deviation = 2.50 lbs

Uninformed group:

Sample size (n) = 76

Sample mean = 1.33 lbs

Sample standard deviation = 2.31 lbs

We can use a t-test with unequal variances (since the sample standard deviations are different) to test the hypothesis. Using a significance level of 0.05 and a one-tailed test, the critical t-value is 1.67 (from a t-distribution with 118 degrees of freedom).

The calculated t-value is: t = (2.00 - 1.33) / sqrt((2.50^2/44) + (2.31^2/76)) = 1.80

Since the calculated t-value (1.80) is greater than the critical t-value (1.67), we reject the null hypothesis and conclude that there is evidence that the informed group of maids lost more weight than the uninformed group of maids.

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1. explain what a positive and negative number means in this situation.
2. what is the total inventory on sunday?
3. how many paper towels do you think were used on thursday? explain how you know

Answers

Positive numbers indicate an increase in the number of cups, while negative numbers indicate a decrease. By using addition, the total inventory on Sunday is 2,893 cups. The number of cups used on Thursday is 2,127.

In this situation, a positive number means that the coffee shop received a delivery of cups, while a negative number means that they used or lost cups.

Assuming that the starting amount of coffee cups is 0, the total inventory on Sunday would be the sum of all the cups received and used until Sunday, which is

2,000 + (-125) + (-127) + 1,719 + (-356) + 782 + 0 = 2,893 cups

To estimate how many cups were used on Thursday, we can subtract the previous balance (2,000 cups) from the balance after Thursday's transaction (-127 cups) and get

-127 - 2,000 = -2,127 cups

Since the number is negative, it means that 2,127 cups were used on Thursday.

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--The given question is incomplete, the complete question is given

" Here is some record keeping from a coffee shop about their paper cups. Cups are delivered 2,000 at a time.

Monday:+2,000

Tuesday:-125

Wednesday:-127

Thursday:+1,719

Friday:-356

Saturday:782

Sunday:0

Explain what a positive and negative number means in this situation.

Assume the starting amount of coffee cups is 0. 2. what is the total inventory on sunday?

How many cups do you think were used on Thursday? Explain how you know."--

A construction company sells half of its bulldozers, then 5 new bulldozers bringing their total to 17 bulldozers. How many bulldozers did they begin with?

Answers

Let's call the number of bulldozers the construction company began with "x".

According to the problem, the company sells half of its bulldozers, which means they have (1/2)x bulldozers left after the sale.

After selling half of their bulldozers, the company acquires 5 new bulldozers, which brings their total to 17 bulldozers.

So we can write an equation based on this information:

(1/2)x + 5 = 17

To solve for x, we can start by subtracting 5 from both sides:

(1/2)x = 12

Then, we can multiply both sides by 2 to isolate x:

x = 24

Therefore, the construction company began with 24 bulldozers.

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Find the value of the variable.

(ill be needing an explanation along with the answer, ty!)

Answers

Thus, the value of the angle x for the given angles of value 100 and 112 is found as 36.

Define about the linear pair:

An adjacent pair of additional angles is known as a linear pair. Adjacent refers to being next to one another, and supplemental denotes that the sum of the two angles is 180 degrees. As previously said, neighbouring angles are those that are close to one another.

An angle pair that forms a line is known as a "line-ar pair."

For the given triangle:

Using the triangle's angle sum property:

x + (180 - 100) + (180 - 112) = 180

(the other two angles except x are linear pair with the angles of value 100 and 112)

So,

x + 80 + 180 - 112 = 180

x = 112 - 80

x = 32

Thus, the value of the angle x for the given  angles of value 100 and 112 is found as 36.

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If using the method of completing the square to solve the quadratic equation x^2-19x-39=0x 2 −19x−39=0, which number would have to be added to "complete the square"?​

Answers

We know that the solutions to the quadratic equation are x=21 or x=-12.

To solve the quadratic equation x^2-19x-39=0 using the method of completing the square, the number that would have to be added to "complete the square" is 91.

First, move the constant term to the right side: x^2-19x=39.

Then, take half of the coefficient of x, square it, and add it to both sides: x^2-19x+90.25=129.25.

This can be factored as (x-9.5)^2=129.25.

Taking the square root of both sides, we get x-9.5=±√129.25.

Solving for x, we get x=9.5±√129.25, which simplifies to x=9.5±11.5.

Therefore, the solutions to the quadratic equation are x=21 or x=-12.

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When are the lower and upper quartiles calculated by finding the average of two values

Answers

The lower and upper quartiles are calculated by finding the average of two values when there is an even number of data points in the dataset. Specifically, the lower quartile (Q1) is the average of the middle two values when the dataset is sorted in ascending order, and the upper quartile (Q3) is the average of the middle two values when the dataset is sorted in descending order.

When are the lower and upper quartiles calculated by finding the average of two values The lower and upper quartiles are values that divide a dataset into four equal parts. The lower quartile (Q1) marks the point below which the lowest 25% of the data falls, and the upper quartile (Q3) marks the point below which the highest 25% of the data falls. When there is an odd number of data points in the dataset, Q1 and Q3 are the median of the lower half and upper half of the dataset, respectively. However, when there is an even number of data points, there is no exact middle value, so the lower and upper quartiles are calculated by averaging the two values that fall in the middle. This ensures that Q1 and Q3 still divide the dataset into four equal parts.

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Evaluate ∫∫∫ (4z^3 + 3y^2 + 2x) dv

Answers

The value of the given triple integral is ∫∫∫ (4z^3 + 3y^2 + 2x) dv = 1/2.

To evaluate the given triple integral, we need to determine the limits of integration for x, y, and z. As there are no specific bounds given, we can assume that the region of integration is the entire space. Therefore, the limits of integration for x, y, and z will be from negative infinity to positive infinity.

Thus, we have:

∫∫∫ (4z^3 + 3y^2 + 2x) dv = ∫∫∫ 4z^3 dv + ∫∫∫ 3y^2 dv + ∫∫∫ 2x dv

Using the fact that the integral of an odd function over a symmetric interval is zero, we can see that the integral of 2x over the entire space is zero.

Hence, we are left with evaluating the integrals of 4z^3 and 3y^2 over the entire space.

∫∫∫ 4z^3 dv = 4 ∫∫∫ z^3 dxdydz

Using the fact that the integral of an odd function over a symmetric interval is zero, we can see that the integral of z^3 over the entire space is zero.

Thus, we have ∫∫∫ 4z^3 dv = 0.

Similarly, we can evaluate ∫∫∫ 3y^2 dv as follows:

∫∫∫ 3y^2 dv = 3 ∫∫∫ y^2 dxdydz

Since the limits of integration are from negative infinity to positive infinity, the integrand is an even function. Therefore, we can write:

∫∫∫ y^2 dxdydz = 2 ∫∫∫ y^2 dx dz dy

Now, using cylindrical coordinates, we can express y^2 as r^2 sin^2 θ and the differential element dv as r dz dr dθ.

Therefore, we have:

∫∫∫ y^2 dxdydz = 2 ∫∫∫ r^4 sin^2 θ dz dr dθ

Using the fact that the integral of sin^2 θ over a full period is π/2, we can evaluate the integral as follows:

∫∫∫ y^2 dxdydz = 2 π/2 ∫0∞ ∫0^2π ∫0^∞ r^4 sin^2 θ dz dr dθ

Simplifying the integral, we get:

∫∫∫ y^2 dxdydz = (π/2) (2π) (1/5) = π^2/5

Hence, we have:

∫∫∫ (4z^3 + 3y^2 + 2x) dv = 0 + π^2/5 + 0 = π^2/5

Finally, we can simplify the result as π^2/5 = 1/2. Therefore, the value of the given triple integral is 1/2.

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Select the statement that correctly describes the solution to this system of equations. 4x+2y=6

4x+2y=4


A. There is no solutions

B. There are infinitely many solutions

C. There is exactly one solution at (4,2)

D. There is exactly one solution at (6,4)

Answers

Answer:

Step-by-step explanation:

The statement that correctly describes the solution to this system of equations 4x+2y=6 and 4x+2y=4 is "There is no solutions". The correct option is A.

The given system of equations is 4x + 2y = 6 and 4x + 2y = 4.

On comparing the two equations, we notice that the left-hand side of both the equations is the same. However, the right-hand side of the two equations is different. This implies that the lines represented by the two equations are parallel to each other, since they have the same slope but different y-intercepts.

If two lines are parallel, they will never intersect. In this case, since the two equations represent two parallel lines, there is no point of intersection between them. Therefore, the system of equations has no solution.

Hence, the correct answer is A. There is no solution to this system of equations.

In summary, the given system of equations cannot be satisfied simultaneously, since the lines represented by the two equations are parallel to each other and hence do not intersect. Therefore, the system of equations has no solution.

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What is the amount of carrying charges for a $10,000 for college if there is a 5% down payment, apr of 10%, and a 36-month repayment period?

Answers

The amount of carrying charges for a $10,000 college loan with a 5% down payment, a 10% APR, and a 36-month repayment period is approximately $1,571.44.

To calculate the amount of carrying charges for a $10,000 college loan with a 5% down payment, a 10% annual percentage rate (APR), and a 36-month repayment period, follow these steps:
1. Determine the down payment: 5% of $10,000 = $500.
2. Subtract the down payment from the loan amount: $10,000 - $500 = $9,500. This is the principal loan amount.
3. Calculate the monthly interest rate: 10% APR / 12 months = 0.833% or 0.00833 as a decimal.


4. Calculate the monthly payment using the loan payment formula: P = r * PV / (1 - (1 + r)⁻ⁿ), where P is the monthly payment, r is the monthly interest rate, PV is the present value (principal loan amount), and n is the number of monthly payments. P = 0.00833 * $9,500 / (1 - (1 + 0.00833)⁻³⁶) = $307.54.
5. Determine the total amount paid over the loan term: Monthly payment * Number of monthly payments = $307.54 * 36 = $11,071.44.
6. Calculate the carrying charges: Total amount paid - Principal loan amount = $11,071.44 - $9,500 = $1,571.44.

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Suppose there are 5 people and 4 waffle. What is each person's share of 4 waffles?

Answers

Answer:

4/5 or 0.8 Waffles per person

Step-by-step explanation:

Divide the 4 waffles among 5 people, 4/5

0.8 waffle.


Pls help quickly i’ll give brainlyist

Answers

Answer:

Angle Q measures 55°, so angle M measures 55°.

39 + 55 + x = 180

94 + x = 180

x = 86

A manufacturer of plumbing fixtures has developed a new type of washerless faucet. let rho-p(a randomly selected faucet of this type will develop a leak within 2 years under normal use). the manufacturer has decided to proceed with production unless it can be determined that p is too large; the borderline acceptable value of p is specified as 0.10. the manufacturer decides to subject n of these faucets to accelerated testing (approximating 2 years of normal use). with x = the number among the n faucets that leak before the test concludes, production will commence unless the observed x is too large. it is decided that if p = 0.10, the probability of not proceeding should be at most 0.10, whereas if rho = 0.30 the probability of proceeding should be at most 0.10. (assume the rejection region takes the form reject h if x2 c for some c. round your answers to three decimal places.)
1. what are the error probabilities for n10? p-value- can n- 10 be used?
a. it is not possible to use n = 10 because there is no value of x which results in a p-value
b. it is not possible to use n10 because it results in b(0.3)> 0.1
c. it is not possible to use n 10 because it results in b(0.3)<0.1 0.1.
d. it is possible to use n = 10 because both the p-value and β(0.3) are less than 0.1
e. it is possible to use 10 because both the p-value and b(0.3) are greater than 0.1
what are the error probabilities for n-20? p-value = β(0-3) = can n 20 be used?
a. it is not possible to use n = 20 because there is no value of x which results in a p-value
b. it is not possible to use n 20 because it results in b(0.3)0.1
c. it is not possible to use n 20 because it results in b(0.3) < 0.1
d. it is possible to use n 20 because both the p-value and b(0.3) are less than 0.1
e. it is possible to use n 20 because both the p-value and b(0.3) are greater than 0.1
2. what are the error probabilities for n-25? p-value . p(0.3) can n 25 be used?
a. it is not possible to use n-25 because there is no value of x which results in a p-value
b. it is not possible to use n 25 because it results in b(o.3) > 0.1
c. it is not possible to use n 25 because it results in b(0.3) < 0.1
d. it is possible to use n 25 because both the p-value and b(0.3) are less than 0.1
e. it is possible to use n 25 because both the p-value and b(0.3) are greater than 0.1 0.1.

Answers

It is not possible to use n = 10.

It is not possible to use n = 20.

It is possible to use n = 25.

1. The error probabilities for n = 10 are as follows:

- P-value: It is not possible to use n = 10 because there is no value of x which results in a p-value.
- Beta (0.3): B(0.3) > 0.1, which means the probability of failing to reject the null hypothesis (p = 0.1) when the true probability of a leak is actually 0.3 is too high.

Therefore, it is not possible to use n = 10.

2. The error probabilities for n = 20 are as follows:

- P-value: It is not possible to use n = 20 because it results in a beta error probability (B(0.3)) < 0.1, which means the probability of incorrectly rejecting the null hypothesis (p = 0.1) when the true probability of a leak is actually 0.3 is too low.
- Beta (0.3): B(0.3) > 0.1, which means the probability of failing to reject the null hypothesis (p = 0.1) when the true probability of a leak is actually 0.3 is too high.

Therefore, it is not possible to use n = 20.

3. The error probabilities for n = 25 are as follows:

- P-value: P(0.3) < 0.1, which means the probability of incorrectly rejecting the null hypothesis (p = 0.1) when the true probability of a leak is actually 0.3 is low enough to proceed with production.
- Beta (0.3): B(0.3) < 0.1, which means the probability of failing to reject the null hypothesis (p = 0.1) when the true probability of a leak is actually 0.3 is low enough to proceed with production.

Therefore, it is possible to use n = 25.

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9-5 practice solving quadratic equations by using the quadratic formula

Answers

The solution to the quadratic equation using quadratic formula is: -1 or -1/2

How to solve quadratic equations using quadratic formula?

The general form of expression of a quadratic equation is:

ax² + bx + c = 0

The quadratic formula for solving quadratic functions is:

x = [-b ± √(b² - 4ac)]/2a

If we have a quadratic equation as: 5x² + 6x + 1 = 0.

Using quadratic formula, we have:

x = [-6 ± √(6² - 4(5*6))]/2*5

x = -1 or -1/2

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An object is launched vertically in the air at 41.65 meters per second from a 7-meter-tall platform. using the projectile motion model h(t)=-4.9t^2+v0t+h0, where h(t) is the height of the projectile t seconds after it’s departure, v0 is the initial velocity in meters per second, and h0 is the initial height in meters, determine how long it will take for the object to reach its maximum height. what is the maximum height?

Answers

To find the maximum height of the object, we need to first determine when the object reaches that height. We can use the projectile motion model h(t) = -4.9t^2 + v0t + h0 to solve for the time it takes for the object to reach its maximum height.

Since the object is launched vertically, we know that its initial velocity is 41.65 m/s and its initial height is 7 meters. We can substitute these values into the projectile motion model and solve for when the object reaches its maximum height by finding the vertex of the resulting quadratic function.

h(t) = -4.9t^2 + 41.65t + 7

To find the time it takes for the object to reach its maximum height, we can use the formula t = -b/2a, where a = -4.9 and b = 41.65.
t = -(41.65)/(2(-4.9))
t = 4.25 seconds

Therefore, it takes 4.25 seconds for the object to reach its maximum height.
To find the maximum height, we can plug in this time value into the projectile motion model and solve for h(t).
h(4.25) = -4.9(4.25)^2 + 41.65(4.25) + 7


h(4.25) = 89.57 meters
The maximum height of the object is 89.57 meters.

In summary, the object launched vertically from a 7-meter-tall platform with an initial velocity of 41.65 m/s takes 4.25 seconds to reach its maximum height of 89.57 meters. This is found by using the projectile motion model h(t) = -4.9t^2 + v0t + h0 and finding the time it takes for the object to reach its maximum height, and then plugging in that time value to find the maximum height.

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