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Johnkun93go
Answered

If y varies directly as x, and y = 40 when x =10, find y when x = 15​

Sagot :

Julilyliago

Formula: y=kx

Given:

y=40

x=10

Find the constant:

40=k(10)

40=10k

k=40/10

k=4

Equation of variation: y=4x

Find: y when x=15

y=4x

y=4(15)

y= 60

Answer: y = 60 when x=15

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