Seudónimo Seudónimo

17-01-2018
Mathematics

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the value of y varies directly with x. When y = 7, x = 2. what is the value of x when y is 21?

Respuesta :

jennyli013 jennyli013

17-01-2018

y=kx
7=k(2)
k=7/2

y=kx
21=7/2(x)
x=6

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