28-10-2019
Mathematics

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Multiple Choice Suppose y varies directly as x. if y = 5 when x=8, find y when x=64

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ujalakhan18 ujalakhan18

28-10-2019

Answer:

Step-by-step explanation:

y∞x

then

y=kx (with k as constant)

y=5 when x=8

⇒Putting this in the first equation

⇒5=k×8

⇒k=5/8

Now

y=? when x=64

Putting x=64 in the first equation

y=kx

⇒y=(5/8)×64

We get

y=40

Hope u understand

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