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3 years ago

What is the measure of each angle in a regular pentadecagon (15-sided figure)?

Mathematics

2 answers:

lesya [120]3 years ago

8 0

156 i think idk but if i´m wrong you can drive into my house.

Oliga [24]3 years ago

4 0

Hey there!

Sense this would be a pentadecagon, we would have to do some dividing here.

Let's start!

$\boxed{360/6=24-180=156}$

Your correct answer would be the first (option A).

$156$ °

I hope this helps you!

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Scores on the math portion of the SAT are believed to be normally distributed and range from 200 to 800. A researcher from the a

Doss [256]

Using the z-distribution, it is found that she should take a sample of 46 students.

<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.

In this problem, we have a 95% confidence level, hence $\alpha = 0.95$ , z is the value of Z that has a p-value of $\frac{1+0.95}{2} = 0.975$ , so the critical value is z = 1.96.

Scores on the math portion of the SAT are believed to be normally distributed and range from 200 to 800, hence, by the Empirical Rule the standard deviation is found as follows:

$6\sigma = 800 - 200$

$6\sigma = 600$

$\sigma = 100$

The sample size is n when M = 29, hence:

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

$29 = 1.96\frac{100}{\sqrt{n}}$

$29\sqrt{n} = 196$

$\sqrt{n} = \frac{196}{29}$

$(\sqrt{n})^2 = \left(\frac{196}{29}\right)^2$

n = 45.67.

Rounding up, a sample of 46 students should be taken.

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

#SPJ1

4 0

2 years ago

What’s the median of 1,1,7,3,2,2,3,5

Ratling [72]

3,2

That’s the answer

3 0

3 years ago

Read 2 more answers

You roll 2 number cubes whats the probability of it being 7

mars1129 [50]

Total number of possible outcomes = 36

Total number with sum 7 =5
{1, 6} {2, 5} {3, 4}, {5, 2}, {6, 1}

P(sum 7) = 5/36

Answer: 5/36

4 0

4 years ago

Read 2 more answers

If x = y and y = 2, then 3x =

USPshnik [31]

Answer:

Step-by-step explanation:

x = y

y = 2, then 3x =3y=3*2=6

6 0

3 years ago

Give the diagram below find the value of x

Aleks [24]

Answer:

Well this is Same side interior angles which would mean that its supplementary or 180.

So we can just,

4x-2+17x+14=180

Combine like terms

21x+12=180

Perform inverse

21x=168

Divide/isolate

x=8

So the value of (x) is 8

Step-by-step explanation:

Well here’s a little tip that might help

So in order to identify interior/exterior angles you have to find the location. The two lines are whats separates the inner and the outter.

The Outter are outside the two parralel lines, their not in between. There are 4 exterior angles.

The inner are the 4 angles between the two parralel lines. There are 4 interior angles.

So there are 5 different ways you would usually hear them.

Alternate interior angle

Alternate exterior angle

Same side exterior (or better known as Converese of the same side exterior)

Same side interior (better known as the converse of the same side interior)

Corresponding

Alternate is basically different sides, but they gotta be only one angle choice, exterior or interior, if correct it makes this slash or back slash if you connect the points.

Same side is basically same side and they have to be the right type (exterior/ interior)

Corresponing has to be the same side also but they have to have.One interior and one exterior.

Corresponing angles are congruent (equal)

Alternate exterior/interior are congruent (equal)

Same side exterior/interior Are supplemenaty (they equal 180)

5 0

3 years ago