3 Use the system of equations shown.
-2x - 4y= 24
6x-8y=28
a. How could you change one of the equations so that you could add it to the
other equation and eliminate the x terms?
b. How could you change one of the equations so that you could add it to the
other equation and eliminate the y terms?
c. What is the solution of the system? Show your work.

a) Mean time between counts is 0.3333 minutes.

b) Standard deviation of time between counts is 0.5774 minutes.

a. Mean time between counts: The mean time between counts can be computed as the inverse of the Poisson rate parameter (λ): Mean time between counts = 1/λ.

The average of 3 counts per minute is the same as the rate parameter λ in a Poisson process. Thus, the mean time between counts is: Mean time between counts = 1/λ = 1/3 = 0.3333 minutes (20 seconds approximately).

b. Standard deviation of the time between counts: The standard deviation of a Poisson process is equal to the square root of the mean.

Therefore, the standard deviation of the time between counts can be calculated as follows: Standard deviation of time between counts = sqrt(mean) = sqrt(1/λ) = sqrt(1/3) = 0.5774 minutes (approximately 35 seconds).

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Answer:

he puts 3.354.235 pounds in it

Step-by-step explanation:

because the synapses hypural torminal that's the only answer that make since.

The sum to infinity of the series 1 + 2x + 3x² + 4x³ + ... is 1/[(1-x)²] when |x| < 1.

The formula for the sum of an infinite geometric series when |x| < 1 is given as:

S = a/(1-r)

We have a = 1 and r = x/1.

S = 1/(1-x) + 2x/(1-x)² + 3x²/(1-x)³ + 4x³/(1-x)⁴ + ...

we multiply both sides of this equation by (1-x)²,

S(1-x)² = (1-x) + 2x + 3x²(1-x) + 4x³(1-x)² + ...

S(1-x)² = 1 + x + x² + x³ + ...    eqn (1)

Using the formula for the sum of an infinite geometric series when |x| < 1, we have:

1/(1-x) = 1 + x + x² + x³ + ...

Substituting this into equation (1), we get:

S(1-x)² = 1/(1-x)

S = 1/[(1-x)²]

In conclusion, the sum to infinity of the series 1 + 2x + 3x² + 4x³ + ... is 1/[(1-x)²] when |x| < 1

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The length of the missing side is 3√17 ft. Option B is the correct option.

What is the hypotenuse?

The longest side of a right-angled triangle, or the side opposite the right angle, is known as the hypotenuse in geometry. The Pythagorean theorem, which states that the square of the length of the hypotenuse equals the sum of the squares of the lengths of the other two sides, can be used to determine the length of the hypotenuse.

The △ABC is a right-angled triangle.

Thus the sum of squares of the legs of the triangle is equal to the square of the hypotenuse.

The hypotenue is 13 ft.

Assume that the missing leg is equal to x.

The legs of the triangle are x and 4ft.

Apply Pythagorean theorem:

13² = 4² + x²

x² = 169 -16

x² = 157

x = √(3×3×17)

x = 3 √17

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Therefore , the solution of the given problem of equation comes out to be the stone will reach its maximum height 2 seconds after being thrown.

Variable words are widely used in complex algorithms to show consistency between two contradictory claims. Academic expressions called equations are used to show the equality of various academic figures. Think about the information that y + 7 provides. When paired with construct y + 7, elevating results in b + 7 in this circumstance rather than another method that may divide 12 equal two halves.

Here,

The height of the stone above the water is given by the function:

=> w(x) = -5(x-8)(x+4)

To find the time when the stone reaches its maximum height, we need to find the vertex of the parabola that represents this function. We can do this by using the formula:

=> x = -b / 2a

where a = -5 and b = -5(8+(-4)) = -20.

Substituting these values into the formula, we get:

=> x = -(-20) / 2(-5) = 2

Therefore, the stone will reach its maximum height 2 seconds after being thrown.

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A right pyramid with an equilateral triangular base has a lateral face with a surface area of 75 square meters. The side of the base of a slant with a height of 30 meters is 5 meters long.

Let’s call the side length of the equilateral triangular base “s”. We know that the area of one lateral face is 75 square meters, and that face is a triangle with base s and height 30 meters (the slant height). We can use the formula for the area of a triangle to solve for s:

Area = (1/2) * base * height

75 = (1/2) * s * 30

Simplifying the equation, we get:

75 = 15s

s = 75/15

s = 5

Therefore, the length of the side of the equilateral triangular base is 5 meters.

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To find the value of the ratio b/a for the 3.0 kg ball and the 1.0 kg ball placed at opposite ends of a massless beam in equilibrium, we can use the principle of moments.

Solution:

Step 1: Identify the forces and distances involved. The 3.0 kg ball has a force of 3.0g (g represents gravity) acting at distance a from the pivot point. The 1.0 kg ball has a force of 1.0g acting at distance b from the pivot point.

Step 2: Apply the principle of moments. For the system to be in equilibrium, the clockwise moment and anticlockwise moment must be equal. This means that the product of the force and distance for each ball must be equal:

3.0g × a = 1.0g × b

Step 3: Solve for the ratio b/a. First, divide both sides of the equation by g:

3.0a = 1.0b

Now, divide both sides of the equation by 3.0a:

b/a = 1/3

The value of the ratio b/a is 1/3.

The ratio is 1:3

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There is no solution if the boundary conditions are inconsistent, i.e., if y(0) ≠ y(L) = 1.

We are given the boundary-value problem:

y" + 16y = 0, y(0) = 1, y(L) = 1

The characteristic equation is r^2 + 16 = 0, which has roots r = ±4i.

The general solution to the differential equation is then y(x) = c1cos(4x) + c2sin(4x).

Using the boundary conditions, we get:

y(0) = c1 = 1

y(L) = c1cos(4L) + c2sin(4L) = 1

Substituting c1 = 1 into the second equation, we get:

cos(4L) + c2*sin(4L) = 1

Solving for c2, we get:

c2 = (1 - cos(4L))/sin(4L)

Thus, the general solution to the differential equation that satisfies the given boundary conditions is:

y(x) = cos(4x) + (1 - cos(4L))/sin(4L)*sin(4x)

Now, we can answer the questions:

(a) To have precisely one nontrivial solution, we need the coefficients c1 and c2 to be uniquely determined. From the above expression for c2, we see that this is only possible if sin(4L) is nonzero. Thus, if sin(4L) ≠ 0, there exists precisely one nontrivial solution.

(b) If sin(4L) = 0, then c2 is undefined and we have a family of solutions that differ by a constant multiple of sin(4x). Hence, there are infinitely many solutions.

(c) There is no solution if the boundary conditions are inconsistent, i.e., if y(0) ≠ y(L) = 1.

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The missing numbers to complete the linear equation that gives the rule for this table are y = 11x-10

A linear equation is an equation that describes a line in a two-dimensional coordinate system. It can be written in the form:

y = mx + b

where y and x are variables representing coordinates on the vertical and horizontal axes, respectively, m is the slope of the line, and b is the y-intercept (the point where the line crosses the y-axis).

The slope of the line represents the rate of change between y and x, or the steepness of the line. A positive slope indicates that the line is increasing from left to right, while a negative slope indicates that the line is decreasing from left to right. A slope of zero indicates a horizontal line, while a slope that is undefined (such as when x is constant) indicates a vertical line.

To find the equation that gives the rule for this table, we need to determine the slope and y-intercept of the line that passes through these points.

We can start by using the two given points (4, 34) and (5, 45) to find the slope:

slope = (change in y) / (change in x)

slope = (45 - 34) / (5 - 4)

slope = 11

Now we can use the point-slope form of a linear equation to write the equation for this line, using the point (4, 34):

y - 34 = 11(x - 4)

Simplifying this equation gives:

y = 11x - 10

So the missing numbers to complete the linear equation that gives the rule for this table are:

y = 11x-10

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Answer:quadrant ll

Step-by-step explanation:

The probability of the repair person taking 3 or more hours to fix the machine is 0.3, or 30%.

As an AI language model, I do not have the specific information needed to answer this question. However, we can use probability theory to solve this problem.

Let's assume that the probability of repairing the machine in 2 hours or less is p, and the probability of taking more than 2 hours is q (which is the same as saying the probability of taking 3 or more hours).

We know that p + q = 1, meaning that the sum of the probabilities of repairing in 2 hours or less and taking more than 2 hours is equal to 1, which represents the total probability.

Now, if we know the value of p, we can easily calculate q by subtracting it from 1:

q = 1 - p

For example, if we assume that the probability of repairing in 2 hours or less is 0.7, then the probability of taking more than 2 hours is:

q = 1 - 0.7 = 0.3

So, in this case, the probability of the repair person taking 3 or more hours to fix the machine is 0.3, or 30%.

However, without knowing the specific probabilities of the repair person finishing within 2 hours or the probabilities of taking longer, we cannot provide an accurate answer to this question.

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Answer:

500 meters.

Step-by-step explanation:

For simple linear regression, the explanatory variable is numeric.

Simple linear regression is a statistical method that allows researchers to understand the relationship between two continuous variables. A simple linear regression model is used to represent the relationship between a dependent variable (Y) and an independent variable (X) by making a linear equation of the form

Y = a + bX, where a is the constant, and b is the regression coefficient.

In simple linear regression, the explanatory variable is of numeric type. This statistical method involves the use of two numeric variables, namely the explanatory (independent) variable and the response (dependent) variable, which are analyzed to establish a linear relationship between them.

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The initial amount injected was 50 milligrams and  after 7 hours, there are approximately 16.08 milligrams of the drug in the patient's bloodstream.

The function that models the number of milligrams D(h) in a patient's bloodstream h hours after the drug is injected is:

D(h) = 50e^(-0.2h)

To find the initial amount injected, we can evaluate D(0):

D(0) = 50e^(-0.2*0) = 50e^0 = 50

Therefore, the initial amount injected was 50 milligrams.

To find the amount in the bloodstream after 7 hours, we can evaluate D(7):

D(7) = 50e^(-0.2*7) ≈ 16.08

Therefore, after 7 hours, there are approximately 16.08 milligrams of the drug in the patient's bloodstream.

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Answer:3200

Step-by-step explanation:

there are 1000 ml per liter

four is the minimal because you want to draw all four to the four of a kind

The answers

are 12, 15, 13

__________________________________________________________

The sum of two sides must be equal to or greater than the third side.

4+15 = 19; 4 + 19 = 23; 15 + 19 = 34.

19 is a possible answer.

4 + 15 = 19; 15 + 15 = 30

15 is a possible answer.

4 + 15 = 19; 4 + 13 = 17; 15 + 13 = 28

13 is a possible answer.

4 + 12 = 16; 4 + 15 = 19; 15 + 12 = 27

12 is a possible answer.

4 + 11 = 15; 4 + 15  = 19; 11 + 15 = 26

11 is a possible answer.

15 + 4 = 19; 4 + 4 = 8

4 is NOT a possible answer because 4 + 4 is less than 15.

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The probability that at least 67 out of 100 cars stopped at a roadblock will not be given a ticket is 2.37.

Given Probability of giving tickets to cars that are stopped = 0.23

Probability of not giving tickets to cars that are stopped = 1 - 0.23 = 0.77

the probability that at least 67 out of 100 cars stopped at a roadblock will not be given a ticket

Here n = 100, p = 0.77, q = 0.23

mean = np = 100*0.77 = 77

standard deviation = [tex](sigma = \sqrt{(100)*(0.77)*(0.23) } = 4.208[/tex]

[tex]P(X\geq 67) = \frac{67 - 77}{4.208}[/tex] = 2.37

P-VALUE is 0.99126 from z-table

Probability is a fundamental concept in mathematics that helps us quantify the likelihood of events occurring and is applicable to a wide range of fields. It is a measure of the uncertainty of an event, expressed as a number between 0 and 1. An event with probability 0 is impossible, while an event with probability 1 is certain.For example, the probability of rolling a six on a fair six-sided die is 1/6, since there is only one favorable outcome out of six possible outcomes.

Probability theory has wide applications in fields such as statistics, finance, engineering, and physics, among others. It is used to model and analyze various phenomena, including weather patterns, stock prices, quantum mechanics, and more.

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The plant is growing 0.89 feet per month.

To calculate how much a plant grows per month, you need to first convert the measurements into one unit of measurement.

Since the plant is growing 2/3 of a foot every 3/4 of a month,

we can first convert the fractions of a foot and a month into decimal equivalents.

2/3 of a foot is 0.67 feet, and 3/4 of a month is 0.75 months.

We can then calculate the amount of growth per month by dividing the amount of growth per 3/4 of a month by the amount of time that is 3/4 of a month (0.75).

The equation is 0.67 feet / 0.75 months = 0.89 feet per month.

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The height of the coffee cup is approximately 4.1 cm.

Equations

h = V / (π[tex]r^{2}[/tex])

Plugging in the given values, we get:

h = 174 / (π × [tex]2.7^{2}[/tex])

h ≈ 4.1 cm

Therefore, the height of the coffee cup is approximately 4.1 cm.

The total surface area of a cylinder is the sum of the areas of its curved surface and its two circular bases, while the lateral surface area of a cylinder is the area of its curved surface only, without the bases.

To be more precise, if a cylinder has a height of "h", a radius of "r", and a base circumference of "c", then:

The total surface area of the cylinder is given by: 2πr² + 2πrh = 2πr(r+h) + 2πr² = 2πr(r+h+c)

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In the following question, among the conditions given, With digit combinations, there are 16,807 different 5-digit sequences that can be formed using the digits 0, 1,...,6 if repetition of digits is allowed.

To solve this problem, we can use the fundamental counting principle or multiplication rule. It states that if there are m ways to do one thing, and n ways to do another thing, then there are m*n ways to do both things. Therefore, to find the number of different 5-digit sequences that can be formed using the digits 0, 1,...,6 if repetition of digits is allowed, we can multiply the number of choices at each position. Since repetition is allowed, each of the five positions has 7 possible digits (0, 1, 2, 3, 4, 5, or 6). Thus, the total number of possible 5-digit sequences is:7 × 7 × 7 × 7 × 7 = 7^5 = 16,807Therefore, there are 16,807 different 5-digit sequences that can be formed using the digits 0, 1,...,6 if repetition of digits is allowed.

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There are 16,807 different 5-digit sequences that can be formed using the digits 0, 1,...,6 if repetition of digits is allowed.

To find out the number of different 5-digit sequences that can be formed using the digits 0, 1,...,6 if repetition of digits is allowed, we can use the fundamental principle of counting or multiplication principle.The fundamental principle of counting states that if there are n different ways of performing the first task, and for each of these n ways of performing the first task there are m different ways of performing the second task, then the total number of different ways of performing both tasks is n x m.

To apply this principle to this problem, we can consider each digit in the 5-digit sequence as a task. The first task is to choose a digit from 0, 1,...,6, which can be done in 7 ways since there are 7 digits to choose from. Similarly, for each of the first 5 digits, there are 7 ways to choose a digit from 0, 1,...,6, so the total number of different 5-digit sequences that can be formed with repetition of digits allowed is 7 x 7 x 7 x 7 x 7 = 7^5 = 16,807.

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Answer: theres no attachment

Step-by-step explanation:

Answer:

42 m2

Step-by-step explanation:

3=18

7=?

=7 × 13 ÷ 3

=42

The answer to the expression 547 + 233 × 5 - 142 is 1752. To solve the expression, we must follow the order of operations, which is PEMDAS: Parentheses, Exponents, Multiplication, and Division (performed left to right), and Addition and Subtraction (performed left to right).

Since there are no parentheses or exponents in this expression, we start with multiplication and division. In this case, we have to multiply 233 by 5, which gives us 1165. Then, we add 547 to 1165, which gives us 1712. Finally, we subtract 142 from 1712, which gives us the final answer of 1752. Therefore, the result of the expression 547 + 233 × 5 - 142 is 1752, which can be obtained by following the order of operations and performing the arithmetic operations in the correct order.

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To put fractions in order from least to greatest, you need to compare their values by finding the common denominator.

Step 1: Find a common denominator for all the fractions.

Step 2: Convert each fraction to an equivalent fraction with the common denominator.

Step 3: Compare the numerators of the equivalent fractions. The fraction with the smallest numerator is the smallest fraction, and the fraction with the largest numerator is the largest fraction.

Step 4: If two or more fractions have the same numerator, compare their denominators. The fraction with the smallest denominator is the smallest fraction, and the fraction with the largest denominator is the largest fraction.

Step 5: Write the fractions in order from least to greatest.

For example, let's say you need to put the fractions 1/3, 2/5, and 3/8 in order from least to greatest.

Step 1: The common denominator for 3, 5, and 8 is 120.

Step 2: Convert each fraction to an equivalent fraction with a denominator of 120.

1/3 = 40/120

2/5 = 48/120

3/8 = 45/120

Step 3: Compare the numerators of the equivalent fractions: 40 < 45 < 48

Step 4: Since 40 is not equal to 45 or 48, we don't need to compare the denominators.

Step 5: Write the fractions in order from least to greatest: 1/3 < 3/8 < 2/5.

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Answer:

H=25

I=36

Step-by-step explanation:

The experimental probability that Roberto will get a hit during his next time at bat is 0.25 or 25%.

The experimental probability of an event is calculated by dividing the number of times the event occurred by the total number of trials.

In this case, the event is "getting a hit" and the number of times it occurred is 11. The total number of trials is 44, which represents the number of times Roberto was at bat.

Experimental probability of getting a hit = Number of times Roberto got a hit / Total number of times at bat

Experimental probability of getting a hit = 11 / 44

Experimental probability of getting a hit = 0.25 or 25%

Therefore, the experimental probability that Roberto will get a hit during his next time at bat is 0.25 or 25%.

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Answer:

120°

Step-by-step explanation:

We know that the exterior angle of a triangle is equal to the sum of the interior opposite angles.

Let the unknown angle be x.

Accordingly,

70° + 50° = x

120° = x

Answer:-22

Step-by-step explanation:

g(x)=g(-2) means that, x=-2:

so, we have to write -2 instead of every x,

5*(-2)-12=-10-12=-22

The pie chart accurately represents the data from the poll, as it accurately shows the proportion of people who agreed with each candidate's positions.

The pie chart presents a good representation of the data from the poll taken asking people if they agreed with the positions of the 4 candidates for a county office. This is because the pie chart accurately shows the proportion of people who agreed with each candidate's positions. For example, the chart indicates that 26% of the people agreed with Candidate A's positions, 28% agreed with Candidate B's positions, 29% agreed with Candidate C's positions, and 17% agreed with Candidate D's positions. In order to calculate the proportions, the total number of people who responded to the poll was divided by each individual candidate's number of supporters. For example, for Candidate A, the proportion of people who agreed with their positions was calculated by dividing the total number of people responding to the poll (100) by the number of people who agreed with Candidate A's positions (26), resulting in a proportion of 0.26 or 26%. This same approach was used to calculate the proportions of each candidate's supporters. Therefore, the pie chart accurately presents the data from the poll and is a good representation of the data.

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