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2 years ago

QUESTION 8

Mathematics

1 answer:

12345 [234]2 years ago

6 0

The answer that you should get is 5.4919

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What is the area of the polygon ?

Effectus [21]

Answer:

C) 99 in²

Step-by-step explanation:

you can divide this shape by drawing a horizontal line to create a 4x12" rectangle and a trapezoid with a height of (10-4) in and bases of 12 and 5"

area of rectangle: 12 x 4 = 48

area of trapezoid: 1/2(6)(12+5) = 3(17) = 51

total area = 48 + 51

total area = 99 in²

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2 years ago

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Anyone want to talk girls only(halljeanice1) Email only

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Answer:

im girl maybe or 60yo dog

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1 year ago

How large a sample should be selected to provide a 95% confidence interval with a margin of error of 6? Assume that the populati

marshall27 [118]

Using the z-distribution, it is found that a sample of 171 should be selected.

<h3>What is a z-distribution confidence interval?</h3>

The confidence interval is:

$\overline{x} \pm z\frac{\sigma}{\sqrt{n}}$

The margin of error is:

$M = z\frac{\sigma}{\sqrt{n}}$

In which:

$\overline{x}$ is the sample mean.

z is the critical value.

n is the sample size.

$\sigma$ is the standard deviation for the population.

For this problem, the parameters are:

$z = 1.96, \sigma = 40, M = 6$

Hence we solve for n to find the needed sample size.

$M = z\frac{\sigma}{\sqrt{n}}$

$6 = 1.96\frac{40}{\sqrt{n}}$

$6\sqrt{n} = 40 \times 1.96$

$\sqrt{n} = \frac{40 \times 1.96}{6}$

$(\sqrt{n})^2 = \left(\frac{40 \times 1.96}{6}\right)^2$

n = 170.7.

Rounding up, a sample of 171 should be selected.

More can be learned about the z-distribution at brainly.com/question/25890103

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1 year ago

What Does x AND y equal

Tema [17]

90-62=28
x=28
90-62=28
y=28
*right angle triangle is 90 degrees

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2 years ago

A group of friends were working on a student film that had a budget of $900. They used 79% of their budget on equipment. How muc

Mariana [72]

Answer:

711

Step-by-step explanation:

They used 79/100 of their money on equipment which means if they have a budget of 900 dollars they used...

900*79/100=9*79=711 dollars on equipment.

8 0

2 years ago