babyraee10 babyraee10

08-12-2016
Mathematics

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Y varies inversely with x=3.25 when y=4.5. What is the value of x when y=4.5?

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maryraee maryraee

08-12-2016

y varies inversly as x, so:

y = k/x, where k is the constant of proportionality, so:

4.5 = k/3.25, so

k = 4.5 x 3.25, so

k = 14.625, and

y = 14.625/x

when y = 3.75,

3.75 = 14.625/x, so

x = 14.625/3.75, so

x = 3.9

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