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2 years ago

4(X+7)^2-6 i had this question on a test today

Mathematics

1 answer:

scoray [572]2 years ago

8 0

Answer:. 1/ 4(x+7)^4

Step-by-step explanation:we will get 4(x+7)^-4

So if we do the inverse , we will get

1 / 4(x+7)^4

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Step-by-step explanation:

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1 year ago

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Fill in the missing information. Tim Worker is doing his budget. He discovers that the average miscellaneous expense is $45.00 w

nlexa [21]

Answer:

$P(38.6$

And we can assume a normal distribution and then we can solve the problem with the z score formula given by:

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

And replacing we got:

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$P(-0.4$

Step-by-step explanation:

Let X the random variable who represent the expense and we assume the following parameters:

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And for this case we want to find the percent of his expense between 38.6 and 57.8 so we want this probability:

$P(38.6$

And we can assume a normal distribution and then we can solve the problem with the z score formula given by:

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

And replacing we got:

$z=\frac{38.6- 45}{16}= -0.4$

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