2 years ago

I need an equation for this

1 answer:

6 0

37 + x = 2(14 + x)

Explanation:

$37 + x = 2(14 + x)$
$37 + x = 28 + 2x$
subtract both sides by 28
9 + x = 2x
subtract both sides by x
9 = x

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Answer:

A. $Z=2.06$

Step-by-step explanation:

We want to find the Z-score of $X=27$ if the population mean is $\mu=20$ ,and the population standard deviation is $\sigma=3.4$ .

We use the formula:

$Z=\frac{X-\mu}{\sigma}$

We substitute the values to obtain:

$Z=\frac{27-20}{3.4}$

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The correct answer is A.

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