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2 years ago

15

HELP I NEED ASSISTANCE

1 answer:

nalin [4]2 years ago

8 0

Okay, so first lets do the equation.

3/2(2+4b)
6/2 + 12/2b
3 + 6b

Now let us see if any of the equations in the box are equal to 3 + 6b.

Well we know that the first one is a no.

For the second on, 3(2b + 1), we get 6b + 3 which is equal to 3 + 6b.

The third one is not correct.

And of course the third one is correct.

So the answer is...

24b = no

3(2b+1) = yes

(6b + 2b) = no

6b + 3 = yes

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Answer:

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Step-by-step explanation:

The playing life of a Sunshine radio is normally distributed

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Standard deviation = $\sigma = 100 hours$

We are supposed to find the probability that a radio selected at random will last from 600 to 700 hours i.e.P(600<x<700)

Formula: $Z= \frac{x-\mu}{\sigma}$

At x = 600

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