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02-04-2018
Mathematics

contestada

If y varies directly as x and y = 14 when x = 7, find x when y is 30

Respuesta :

02-04-2018

If directly proportional then y=kx so
14=k x (7) so k=2
Y=kx
Y=2x
30=2 x
Divide both by 2
X=15

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