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fredd [130]
3 years ago
5

In a certain town, 22% of voters favor a given ballot measure. For groups of 21 voters, find the variance for the number who fav

or the measure.
Mathematics
1 answer:
raketka [301]3 years ago
4 0

c. 4.6

       

21 X .22= 4.6

       

Calculating the variance requires finding the product of 21 and 22%. To make this easier we convert 22% into it's decimal form and construct the equation. To back check this answer we can use 10% of 21 voters which equals 2.1% then double that amount to reach 4.2%, knowing that we now have a close approximation of the variance we can eliminate answers a, b, and d, leaving c as the only logical choice.

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Help me: <img src="https://tex.z-dn.net/?f=%5Cint%5Climits%5E%5Cpi%20_0%20sin%28%7Bx%7D%29%20%5C%2C%20dx" id="TexFormula1" title
ikadub [295]

Answer:

\int^{\pi}_{0}sin(x)dx = 2

Step-by-step explanation:

To solve for the value of \int^{\pi}_{0}sin(x)dx, we need to first find the antiderivative of sin(x).

Since the derivative of cos(x) is -sin(x), therefore the derivative of -cos(x) is sin(x). With this:

\int^{\pi}_{0}sin(x)dx = -cos(\pi)-(-cos(0))

=-cos(\pi)+cos(0)

=-(-1)+1

=2

∴ \int^{\pi}_{0}sin(x)dx = 2

Hope this helps :)

5 0
2 years ago
Which of the following expressions do not have a result of zero? Why don't they? If not zero, what is their result? Express your
ludmilkaskok [199]

Answer:

6/0

Step-by-step explanation:

1. 0

2. 0

3.0

4. it can't divide

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3 years ago
How much is 4817 times 818?
Free_Kalibri [48]
3940306 im new in this app, hey guys !
8 0
3 years ago
Read 2 more answers
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evablogger [386]
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3 years ago
I solved the problem but I'm not sure if I got it right so can you guys help me with it?
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