Question

P varies inversely with x. if p=7 when x=8, find the value of P when x=7

Answer 1

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Answer:

P = 8

Explanation:

The "varies inversely" relation can be expressed by the equation ...

P = k/x

For the given values, we can find k to be ...

k = Px = (7)(8) = 56

Then for the new value of x, we have ...

P = 56/x = 56/7

P = 8