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2 years ago

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

Mathematics

1 answer:

inna [77]2 years ago

3 0

Answer:

P = 8

Step-by-step explanation:

Given that P varies inversely with x then the equation relating them is

P = $\frac{k}{x}$ ← k is the constant of variation

To find k use the condition P = 7 when x = 8 , then

7 = $\frac{k}{8}$ ( multiply both sides by 8 )

56 = k

P = $\frac{56}{x}$ ← equation of variation

When x = 7 , then

P = $\frac{56}{7}$ = 8

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Step-by-step explanation:

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2 years ago

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2 years ago

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