phalenw phalenw

03-10-2017
Mathematics

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if y varies directly as x, and y=8 when x=5, find y when x=10

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RedShadowSlayer RedShadowSlayer

03-10-2017

You have to set it up as a ratio 8/5 = y/10, then you have to cross mutliply and divide. So 8×10=80 and 80/5= 16 so y=16.

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