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OpenStudy (anonymous):
If y varies directly as x and y is 180 when x is n and y is n when x is 5, what is the value of n?
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OpenStudy (johnweldon1993):
Well varying directly, looks like y = kx since we know that y = 180 when x = n we have 180 = kn we also know when x = 5 ; y = n so n = k5 so now that we know n = 5k... what can we do with it??
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