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4 years ago

6

What is the measure of an angle in a regular dodecagon

1 answer:

cupoosta [38]4 years ago

5 0

This is what I think: All sides are the same length (congruent) and all interior angles are the same size (congruent). To find the measure of the angles, we know that the sum<span> of all the angles is 1800 degrees And there are twelve angles... so, the measure of the interior angle of a regular dodecagon is 150 degrees.</span>

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Clay weighs 9 times as much as his baby sister clay weighs 63 pounds how much doea hiw baby sister weigh in ounces

Mrrafil [7]

Answer:

112 ounces

Step-by-step explanation:

Clay weighs 9 times as much as his baby sister .

Clay weighs 63 pounds.

His baby sister weigh 63/9.

His baby sister weighs 7 pounds.

But to be converted to ounce.

1 pound = 16 ounces

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7 pounds = 112 ounces

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3 years ago

Help?? I seriously don’t understand?

Anvisha [2.4K]

Answer:

A

Step-by-step explanation:

3(x-2)

Replace x as 12

3(12-2)

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3 years ago

An automobile manufacturer claims that its van has a 40.3 miles/gallon (MPG) rating. An independent testing firm has been contra

vovikov84 [41]

Answer:

The value of the test statistic is -2.64.

Step-by-step explanation:

The test statistic is:

$t = \frac{X - \mu}{\frac{\sigma}{\sqrt{n}}}$

In which X is the sample mean, $\mu$ is the expected(claimed) mean, $\sigma$ is the standard deviation and n is the size of the sample.

An automobile manufacturer claims that its van has a 40.3 miles/gallon (MPG) rating.

This means that $\mu = 40.3$

After testing 250 vans, they found a mean MPG of 39.9. Assume the standard deviation is known to be 2.4.

This means, respectively, that:

$n = 250, X = 39.9, \sigma = 2.4$

So

$t = \frac{X - \mu}{\frac{\sigma}{\sqrt{n}}}$

$t = \frac{39.9 - 40.3}{\frac{2.4}{\sqrt{250}}}$

$t = -2.64$

The value of the test statistic is -2.64.

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3 years ago

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alina1380 [7]

Answer:

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Step-by-step explanation:

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4 years ago