an acme bearings manager wants to compare the average ball bearing sizes from two different machines. she suspects the mean diameter for bearings from machine 2 exceeds that of bearings from machine 1. she takes two independent, random samples of size 50, one from each machine. the mean and standard deviation of bearings taken from machine 1 are 3.302 mm and 0.051 mm. the mean and standard deviation of bearings taken from machine 2 are 3.355 mm and 0.050 mm. run a hypothesis test consistent with her suspicions. be sure to a. check all necessary assumptions; b. state the null and alternative hypotheses; c. decide whether or not to pool and explain why; d. calculate the test statistic and p-value; e. state your conclusion in a complete sentence based on the p-value.

The least of the integers in arithmetic mean of n consecutive odd integers is 3.

The formula to calculate average or arithmetic mean of evenly distributed set is -

Average = sum of first and last term/2

Keep the values in formula to find the least integer. Since these are consecutively arranged, the first number will be the least number.

10 = first number + 17/2

First number + 17 = 10×2

Performing multiplication on Right Hand Side

First number + 17 = 20

First number = 20 - 17

Performing subtraction

First number = 3

Hence, the least integer is 3.

Learn more about mean -

https://brainly.com/question/20118982

#SPJ4

The equation is not a proportion, and the value of z in the equation is 17

Given that

2Z = Z + 17

To solve for z in the proportion:

2z = z + 17

We can start by simplifying the equation by subtracting z from both sides:

2z - z = 17

Simplifying further, we get:

z = 17

Therefore, the solution to the proportion is z = 17.

Read more about proportions at

https://brainly.com/question/870035

#SPJ1

The height of the basketball hoop is 13.32'.

What is law of similarity?

The Law of Similarity in mathematics states that if two geometric figures have the same shape but different sizes, then they are considered similar. This means that the corresponding angles of the two figures are congruent, and the corresponding sides are proportional in length.

Formally, if we have two geometric figures A and B, and if every angle of figure A is congruent to the corresponding angle of figure B, and if the ratio of the length of any pair of corresponding sides of A and B is constant, then we can say that A and B are similar figures.

Here we can see two triangle and base of two triangle is given.

Here base of small triangle is 12' and the base of big triangle is (12'+25') = 37'.

It is also given that height of small triangle is 4'3.84".

Now we want to find the height of the basketball hoop which is equal to height of big triangle.

Let the height of the basketball hoop be x.

So, by law of similarity ratios,

12'/37' = 4'3.84"/x

Now, 4'3.84" = 4.32'

So, 12'/37' = 4.32'/x

Therefore, x = 13.32'

Therefore, the height of the basketball hoop is 13.32'.

Learn more about triangle here,

https://brainly.com/question/27827375

#SPJ1

Answer:

O=0

T=-5

c = 0

R = -2

6 = 8

2 = 8

11=-3

Step-by-step explanation: Sorry for the late answer It took me a bit to solve all the problems but I hope this helps you!!

Answer:

Step-by-step explanation:

Volume of a rectangular prism = l x w x h

I am reading the width as 12 1/2 ft

Treat the depth of the ball pit as height

Vol = l x w x h

875 = (20)(12 1/2)(h)

875 = 250(h)

875/250 = 250h/250

3 1/2 = height

depth of the ball pit is 3 1/2 ft

The ball pit is 3.5 feet deep. This can be answered by the concept Surface area.

To find the depth of the ball pit, we can use the equation: Volume = length x width x depth.

The volume of the ball pit is given as 875 cubic feet, the length is 20 feet and the width is 12.5 feet. Let d be the depth of the ball pit. Therefore, the equation we can use is:

875 = 20 x 12.5 x d

To solve for d, we can divide both sides of the equation by (20 x 12.5):

d = 875 / (20 x 12.5)

d = 3.5 feet

Therefore, the ball pit is 3.5 feet deep

To learn more about Surface area here:

brainly.com/question/29298005#

#SPJ11

After solving the given equation 1/4b - 2 = -1/2b + 4, the resultant value of b is 8/3 respectively.

An equation is a mathematical expression with two equal sides and an equal sign.

4 + 6 = 10 is an illustration of an equation.

On the left side of the equal sign, you can see 4 + 6, and on the right, you can see 10.

A formula exists in every equation.

Some equations do not have formulae.

Equations are designed to be solved for a variable.

We look over formulas.

So, we have the equation:

1/4b - 2 = -1/2b + 4

Now, solve the equation for b as follows:

1/4b - 2 = -1/2b + 4

1/4b = -1/2b + 6

1/4b + 2/1b = 6

1+8/4b = 6

9/4b = 6

b = 6 * 4/9

b = 2 * 4/3

b = 8/3

Therefore, after solving the given equation 1/4b - 2 = -1/2b + 4, the resultant value of b is 8/3 respectively.

Know more about equations here:

brainly.com/question/2972832

#SPJ1

Answer:

6x² - 12x - 18

the factors are -18 and 6

6x² - 18x + 6x - 18

6x(x - 3) + 6 (x - 3)

(6x + 6) or (x - 3)

the factors are:

(6x + 6) or (x - 3)

Answer: The volume of a cone is given by the formula V = (1/3)πr^2h, where r is the radius and h is the height.

For the original cone with radius r and height 12 cm, we have:

V = (1/3)πr^2h

V = (1/3)πr^2(12)

V = 4πr^2

For the second cone with 3 times the radius of the original cone and the same height of 12 cm, we have:

V' = (1/3)π(3r)^2h

V' = (1/3)π9r^2(12)

V' = 36πr^2

Therefore, the expression for the volume of the second cone is 36πr^2.

Step-by-step explanation:

The resulting triangle would have twice the area and all sides would be twice as long as the original triangle, but the angles would remain the same.

A triangle is a geometric shape that consists of three straight line segments or sides that are connected at three points called vertices. Triangles are two-dimensional and are the simplest polygon that can exist in Euclidean space. Triangles can be classified according to the size and shape of their sides and angles. Triangles are used in many different areas of mathematics, science, and engineering. They are also common in everyday life, for example in construction, architecture, and design.

Here,

To dilate a triangle with a center point C and a scale factor of 2, you would first draw a ray from C through each vertex of the triangle. Then, you would measure the distance from C to each vertex of the original triangle and multiply it by the scale factor (2 in this case) to find the distance from C to each corresponding vertex of the dilated triangle. Finally, you would draw lines connecting the dilated vertices to form the dilated triangle.

To know more about triangle,

https://brainly.com/question/28600396

#SPJ1

Answer:

[tex] - \frac{2}{5} m( - \frac{4}{9} m - \frac{1}{7} ) = [/tex]

[tex] \frac{8}{45} {m}^{2} + \frac{2}{35} [/tex]

If the pyramid is sliced horizontally (parallel to the base), the resulting cross section would be a regular pentagon with the same side length as the base of the pyramid

If the pyramid is sliced horizontally (parallel to the base), the resulting cross section would be a regular pentagon with the same side length as the base of the pyramid. This is because a horizontal slice would intersect all five sides of the pentagonal base at equal distances from the apex of the pyramid, resulting in a regular pentagon.

If the pyramid is sliced vertically through the top vertex (perpendicular to the base), the resulting cross section would be a triangle. The triangle's shape would depend on the height of the pyramid and the angle of the slice. The base of the triangle would be a regular pentagon, with the height of the pyramid as the altitude. The apex of the triangle would be the top vertex of the pyramid. The shape of the triangle would change depending on the angle of the slice, but it would always be an isosceles triangle since the slice passes through the apex, which is the vertex of the pyramid where all the edges meet.

Learn about volume of the pyramid here https://brainly.com/question/218706

#SPJ1

Answer:

aₙ = 3n - 2

Step-by-step explanation:

The given sequence is an arithmetic sequence with the first term a₁ = 1 and the common difference d = 3.

The explicit formula for an arithmetic sequence is:

aₙ = a₁ + (n - 1)d

where aₙ represents the nth term in the sequence.

Substituting the values we have:

aₙ = 1 + (n - 1)3

Simplifying the equation we get:

aₙ = 3n - 2

Therefore, the explicit formula for the given sequence 1, 4, 7, 10, ... is aₙ = 3n - 2.

With the confidence interval, it can be concluded with 99% confidence that the true proportion of teenage drivers in Atlanta who text while driving lies between 35.89% and 75.23%.

The confidence interval (CI) is equal to the sample proportion (p) plus or minus the product of the critical value (z*) and the standard error of the proportion, where the standard error is calculated by taking the square root of the product of the sample proportion, its complement (1 - p), and the reciprocal of the sample size (n), formed in an equation.

where:

p is the sample proportion (15/27 in this case)

z* is the critical value from the standard normal distribution for the desired confidence level (99% in this case, which corresponds to a z* value of 2.576)

n is the sample size (27 in this case)

Substituting the given values, we get:

CI = 0.5556 ± 2.576*√((0.5556(1-0.5556))/27)

Simplifying this expression, we get:

CI = 0.5556 ± 0.1967

So the 99% confidence interval for the population proportion of teens who text while driving is:

(0.3589, 0.7523)

Therefore, we can be 99% confident that the true proportion of teenage drivers in Atlanta who text while driving lies between 35.89% and 75.23%.

Learn more about confidence intervals at

brainly.com/question/24131141

#SPJ4

A. The Utilization rate is 0.5714 or 57.14%, B. The average number of students in line is 0.9 students and C. The average time of waiting in line was 4.57 minutes.

The utilization rate refers to the proportion of time Judy Gumshoes spends processing student requests.

To calculate this rate, divide the average service time by the average time between arrivals. In this case, the average service time is 8 minutes, and students arrive every 14 minutes on average.

a) Utilization rate: 8 minutes / 14 minutes = 0.5714 or 57.14%

b) To determine the average number of students in line,

we can use the formula L = λW, where L represents the average number of students in the system, λ is the arrival rate (1 student per 14 minutes), and W is the average time a student spends in the system (waiting and being served). Since we know the utilization rate,

we can calculate the average waiting time (Wq) using the formula,

Wq = (U^2) / (1 - U), where U is the utilization rate.

In this case, Wq = (0.5714^2) / (1 - 0.5714) = 0.3265 or 32.65% of 14 minutes = 4.57 minutes.

W = Wq + service time

= 4.57 minutes + 8 minutes

= 12.57 minutes.

Finally, L = λW = (1 student / 14 minutes) * 12.57 minutes

= 0.9 students.

c) The average time of waiting in line is the same as the average waiting time in the system (Wq), which we calculated as 4.57 minutes.

In summary, the utilization rate of the service counter is 57.14%, the average number of students in line is 0.9, and the average waiting time in line is 4.57 minutes.

Know more about Utilization rate here:

https://brainly.com/question/14762362

#SPJ11

Answer:

Graph H

Step-by-step explanation:

intercept (0,2)

l will spend $58.40 on gas.

What is Multiplication?

Multiplication is an arithmetic operation that involves combining two or more numbers to produce a third number called the product. The symbol for multiplication is "×" or "*".

For example, if you have 3 apples and want to know how many apples you would have if you tripled the amount, you can multiply 3 by 3 to get the answer: 3 × 3 = 9. So, if you tripled the amount of apples you had, you would have 9 apples in total.

Multiplication can be thought of as repeated addition. For instance, 3 × 4 is the same as 3 + 3 + 3 + 3, which equals 12. In this example, 3 is added to itself four times.

Here given, a car holds 50 litres of gas and the price is 116.8 ($1.168) per litre.

We want to calculate the total cost of the gas.

We can find it by multiplying the number of litres by the price per litre

Total cost = [tex]50 \times 1.168[/tex]

Total cost = $58.40

Therefore, l will spend $58.40 on gas.

Learn more about multiplication here,

https://brainly.com/question/10873737

#SPJ1

Correct question is "Your car holds 50 litres

of gas. If the price is 116.8 ($1.168) per litre then how much money will you spend on gas?"

Since there are 52 cards in a standard deck, there are 52 possible outcomes for the first draw from the first deck. Similarly, there are 52 possible outcomes for the first draw from the second, third, and fourth decks. Therefore, the total number of outcomes for the first draw is 52 + 52 + 52 + 52 = 208.

For the second draw, there are only 51 possible outcomes for each deck, since one card has already been drawn. Therefore, the total number of outcomes for the second draw is 51 + 51 + 51 + 51 = 204.

For the third draw, there are only 50 possible outcomes for each deck, since two cards have already been drawn. Therefore, the total number of outcomes for the third draw is 50 + 50 + 50 + 50 = 200.

For the fourth draw, there are only 49 possible outcomes for each deck, since three cards have already been drawn. Therefore, the total number of outcomes for the fourth draw is 49 + 49 + 49 + 49 = 196.

The total number of outcomes for drawing one card each from four different standard decks of cards is the product of the outcomes for each draw: 208 x 204 x 200 x 196 = 338,401,792.

Therefore, the general form of the circle is:

[tex]x^2 + y^2 - 10x-10y+34=0[/tex].

A circle is a geometric shape that is defined as the set of all points in a plane that are at a fixed distance (called the radius) from a given point (called the center). The distance from the center to any point on the circle is always the same. Circles are often represented using the symbol "O" or "⚪" and are important in mathematics, geometry, and physics. They have many properties, such as circumference (the distance around the circle), area (the space inside the circle), and diameter (the distance across the circle through the center). Circles are used in various fields, including architecture, engineering, and art.

To convert the standard form of a circle to the general form, we expand and simplify the equation as follows:

[tex](x - 5)^2 + (y - 5)^2 = 16[/tex]

[tex]x^2 - 10x + 25 + y^2 - 10y + 25 = 16[/tex] (using the identity [tex](a - b)^2 = a^2 - 2ab + b^2)[/tex]

[tex]x^2 + y^2 - 10x-10y+34=0[/tex]

Therefore, the general form of the circle is:

[tex]x^2 + y^2 - 10x-10y+34=0[/tex]

To learn more about circle, visit

https://brainly.com/question/29142813

#SPJ1

Brie saves $600 each month.

What is equation?

An equation is a  statement that shows that two expressions are equal. It typically consists of variables, constants, and mathematical operations such as addition, subtraction, multiplication, and division

To determine how much money Brie saves each month, we need to subtract her expenses from her income.

Income = $3,000

Expenses = $1,400 + $700 + $200 + $100 = $2,400

Savings = Income - Expenses

Savings = $3,000 - $2,400

Savings = $600

Therefore, Brie saves $600 each month.

To learn more about equation visit the link:

https://brainly.com/question/17145398

#SPJ1

Answer: SHawn

Step-by-step explanation:

Therefore , the solution of the given problem of trigonometry comes out to be -1 is the simplified formula.

Some claim that the fusion of various fields contributed to the development of astrophysics. With the aid of precise mathematical methods, many metric issues can be resolved or the output of a computation can be determined. The scientific investigation of all six fundamental geometric calculations is known as trigonometry. They are known by a number of names and abbreviations, such as sine, variance, angle, and others. (csc).

Here,

Let's first use trigonometric identities to separately simplify each term:

=> cos(x - 90°) equals sin(x)

=>  cos(x - 180°) = -cos(x)

=> tan(x) = cos(x) / sin(x)(x)

=>  x(cos(-)) = x(x)

=> (180° + x) sin = -sin(x)

When we replace the equation with these simplifications, we get:

=> cos(x) * sin(180° plus x) * cos(x) * (-cos(x)) + (sin(x) / cos(x))

=>  sin(180° plus x) * sin(-cos2(x))

=>  -cos²(x) - sin(x)*sin(180° + x) (using the equation sin(x)*sin(x)) = -sin^2(x))

Using the identity sin2(x) +cos2(x) = 1, we get = -1.

Consequently, -1 is the simplified formula.

To know more about trigonometry visit:

https://brainly.com/question/29002217

#SPJ1

Answer:

the answer is d

Step-by-step explanation:

hope this helps

Answer: 163.6363...

Step-by-step explanation:

44% of c is 72, so then [tex]0.44*c=72\\[/tex].

Divide both sides by 0.44 to solve for c, and you get c=163.6363...

Tip: if you are ever trying to figure out what a number is a percentage of, like in this problem, just divide the number by the percent in decimal form.

The arithmetic sequence expression for the given sequence 6, 9, 12, 15, 18....... would be aₙ = 6+(n-1)3.

A progression or sequence of numbers known as an arithmetic sequence maintains a consistent difference between each succeeding term and its predecessor.

The common difference of that mathematical progression is the constant difference.

'n' denotes the term's position in the supplied arithmetic sequence in the formula for obtaining the general term: a = a1 + (n - 1) d. For instance, a2 denotes the second phrase in the sequence.

So, the given sequence is:

6, 9, 12, 15, 18

Common difference (d) is: 9 - 6 = 3

Then, the sequence expression would be:

aₙ = 6+(n-1)3

Therefore, the arithmetic sequence expression for the given sequence 6, 9, 12, 15, 18....... would be aₙ = 6+(n-1)3.

Know more about the arithmetic sequence here:

https://brainly.com/question/6561461

#SPJ1

As, AD = BC, the given shape on the graph shows the rectangle found using distance formula.

An enclosed 2-D shape called a rectangle has four sides, four corners, and four right angles (90°). A rectangle has equal and parallel opposite sides. A rectangle has two dimensions—length and width—because it is a two-dimensional form. The rectangle's longer side is its length, while its shorter side is its breadth.

From the given graph, The coordinates of A,B, C and D are-

A = (-3,1)

B = (0,3)

C = (4, -3)

D = (1, -5)

Find the distance AD and BC, if both are equal it forms a rectangle:

Using the distance formula:

d = √[(x2 - x1)² + (y2 - y1)²]

AD = √[(- 3 - 1)² + (1 + 5)²]

AD = √(16 + 36)

AD = √53

BC = √[(0 - 4)² + (3 + 3)²]

BC = √(16 + 36)

BC = √53

As, AD = BC, the given shape on the graph shows the rectangle found using distance formula.

Know more about the rectangle

https://brainly.com/question/25292087

#SPJ1

Answer:

No, you cannot simplify it.

Step-by-step explanation:

Because 2 and 3 are one of the lowest numbers that cannot be simplified.

Answer:

Step-by-step explanation:

The math used shows how much cups it would take to make 4 batches, 3 cups. Therefor yes, he does have exactly enough to make 4 batches of muffins.

the length of NR is approximately 22.8, rounded to the nearest tenth.

To find the length of NR, we need to first identify any relationships between the chords and the arcs they intercept in the circle. From the diagram, we can see that chord PQ intersects arc ONR and chord NO intersects arc PQN.

There are two main properties we can use to solve this problem: the chord-chord power theorem and the angle-arc theorem. The chord-chord power theorem states that if two chords intersect in a circle, the product of the lengths of their segments is equal. That is:

(PQ)(QR) = (NO)(NR)

We know that PQ = 48 and NO = 21, so we can plug those values into the equation and solve for NR:

(48)(QR) = (21)(NR)

QR = (21NR)/48

To find QR, we can use the angle-arc theorem. This theorem states that the measure of an angle formed by two intersecting chords is equal to half the sum of the measures of the arcs they intercept. That is:

∠QNR = (arc PN + arc OQ)/2

We know that arc PN is equal to arc PQ (since they are intercepting the same arc), and we know that arc OQ is equal to the entire circumference of the circle minus arc PQ. The circumference of a circle is given by 2πr, where r is the radius. We don't know the radius of the circle, but we can find it using the Pythagorean theorem. We know that NO and PQ are both chords, so they must intersect at the center of the circle. Therefore, the line segment connecting the center of the circle to the midpoint of chord NO is a perpendicular bisector of NO. This gives us a right triangle with legs of 10.5 and 24 (half of 21 and half of 48). Using the Pythagorean theorem, we can find that the radius of the circle is approximately 26.2.

Now we can plug in our values for arc PN and arc OQ:

∠QNR = (arc PQ + (2πr - arc PQ))/2

∠QNR = πr

We know that QR is the side opposite the angle ∠QNR in right triangle QNR. Therefore, we can use the sine function to find QR:

sin(∠QNR) = QR/r

sin(πr) = QR/26.2

QR = 26.2sin(πr)

Now we can substitute this value for QR into our equation from the chord-chord power theorem:

(48)(26.2sin(πr)) = (21)(NR)

NR ≈ 22.8

Therefore, the length of NR is approximately 22.8, rounded to the nearest tenth.

To know more about angle-arc theorem. click here:

brainly.com/question/15165037

#SPJ1

From the given percentage values, 326.25 points come from amount owed and length of credit history.

What is percentage?

Percentage is a method of representing a value as a fraction of 100. This is frequently used to make comparisons, demonstrate ratios, or determine a fraction of a whole.

The borrower's credit score is 725, and we need to find out how many points come from amount owed and length of credit history.

From the information given, we know that these two categories make up a total of 45% of the score calculation (30% for amount owed and 15% for length of credit history).

We can set up a proportion:

(30% + 15%) / 100% = x / 725

Simplifying the left side:

45% / 100% = 0.45

0.45 = x / 725

Multiplying both sides by 725:

x = 0.45 * 725

x = 326.25

Therefore, 326.25 points come from amount owed and length of credit history.

To learn more about percentage visit:

https://brainly.com/question/24877689

#SPJ1

Answer:

a = 9 , b = 5 , c = 25

Step-by-step explanation:

using the Cosine rule in the triangle

a² = b² + c² - 2bc cosA

where a is the side opposite ∠ A and b, c the sides adjacent to ∠ A

here

a = y , b = x + 5 , c = 3x and A = Θ , then

y² = (x + 5)² + (3x)² - [ 2(x + 5) × 3x × cosΘ ]

y² = x² + 10x + 25 + 9x² - [ 6x(x + 5) × [tex]\frac{1}{6}[/tex] ]

y² = 10x² + 10x + 25 - x(x + 5)

y² = 10x² + 10x + 25 - x² - 5x

y² = 9x² + 5x + 25 ← in the form y² = ax² + bx + c

with a = 9 , b = 5 , c = 25