phalenw phalenw
  • 03-10-2017
  • Mathematics
contestada

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

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RedShadowSlayer
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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