dunagin dunagin

27-10-2017
Mathematics

contestada

assume that y varies inversely with x. if y=27 when x=12, find x when y=-12.

Respuesta :

tynollette tynollette

27-10-2017

y varies inversely with x, means y=k/x
27=k/12 => k=27*12=324
so the equation is y=324/x
when y=-12, -12=324/x => x=324/(-12)=-27

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