matthewjavier29 matthewjavier29

10-12-2017
Mathematics

contestada

if y varies directlt with x, and y=12 when x=15, what is the value of x when y=16

Respuesta :

behdeen2ozqekq behdeen2ozqekq

10-12-2017

y=kx
12=15k
12/15=k
12/15=0.8
16=0.8x
16/0.8=x
16/0.8=20
to check 20*0.8=16

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