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OpenStudy (anonymous):
If y varies inversely as x and y = 4 when x = 9, what is x when y = 72?
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OpenStudy (anonymous):
x=1/2
OpenStudy (anonymous):
x is increased by 8 times because 9*8=72, so y decreases by 8 times, y=4/8=1/2.
OpenStudy (anonymous):
that's what the word "inversely" means.
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