traphousecorndog traphousecorndog

06-07-2020
Mathematics

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If y varies inversely as x, and y = 10 when x = 20,
find x when y = 16.

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09pqr4sT 09pqr4sT

06-07-2020

Answer:

12.5

Step-by-step explanation:

y varies inversely as x.

y = k/x

10 = k/20

200 = k

The constant proportion k is 200.

16 = 200/x

Cross multiply.

200 = 16x

200/16 = x

x = 12.5

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