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Ilya [14]
3 years ago
5

If f(x) = 5x, what is f-1x

Mathematics
1 answer:
Georgia [21]3 years ago
7 0

Answer:

The inverse function is 1/5x

Step-by-step explanation:

f(x) = 5x

We want to find the inverse

y = 5x

Exchange x and y

x = 5y

Solve for y

Divide by 5

1/5x = y

The inverse function is 1/5x

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The life expectancy in the US is 75 with a standard deviation of 7 years. A random sample of 49 individuals is selected. What is
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Answer:

0.02275

Step-by-step explanation:

We use this z score formula to solve for this question

z-score is is z = (x-μ)/σ/√n

where x is the raw score

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From the above question,

x = 77

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σ = 7

number of samples = 49

Hence, the z score = 77 - 75/ (7/√49)

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= 2/1

= 2

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Using the z table to find probability

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2 years ago
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Answer:

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Step-by-step explanation:

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Step-by-step explanation:

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