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4 years ago

What is the length of EF and the measure of ∡D?

Mathematics

1 answer:

Bad White [126]4 years ago

4 0

Answer:

The given information tells you that you have two congruent triangles. That means that all of the side lengths and angles will have the same measurement. So if the length of line CB is 10, then the length of the equivalent side of the second triangle (EF is also 10). Angle A and Angle D will also have the same measurement. Therefore, measurement of angle D is also 37 degrees.

Step-by-step explanation:

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The national mean annual salary for a school administrator is $90,000 a year. A school official took a sample of 25 school admin

Ratling [72]

<u>Missing part of question</u>

Formulate hypotheses that can be used to determine whether the population mean annual administrator salary in Ohio differs from the national mean of $90,000.

Answer:

$H_0:\mu = 90000$

$H_a: \mu \ne 90000$

Step-by-step explanation:

Given

$n = 25$ -- sample size

$\mu = 90000$ --- mean

Required

Formulate a hypothesis

First, the mean annual salary is: $90,000

This represents the null hypothesis

So:

$H_0:\mu = 90000$

To determine if the mean differs implies that

$\mu \ne 90000$

This represents the alternate hypothesis

So:

$H_a: \mu \ne 90000$

So, the null and alternate hypotheses are:

$H_0:\mu = 90000$

$H_a: \mu \ne 90000$

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3 years ago

Divide -5/6 divided by -10 very urgent

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Answer:

$-\frac{1}{12}$

Step-by-step explanation:

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3 years ago

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Suppose you decide to put $12,500 in an account earning 9% interest compounded quarterly. How much interest would you earn after

Vesnalui [34]

Step-by-step explanation:

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because adding 9% gives us in the end 109% of the original amount.

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2 years ago

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Alex Ar [27]

Answer:

a) 88% is a population characteristic.

Step-by-step explanation:

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WHILE

A statistic describes that same characteristic, only that it is obtained from a sample of variables taken from the population.

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Hope this Helps!!!

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