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Lillygurl
Lillygurl Lillygurl
  • 13-09-2016
  • Mathematics
Answered

Suppose y varies directly as x and y=21 when x 3 find x when y=42

Verified Answer :

phoari phoari
  • 16-09-2016

35

y=kx, where k is a constant

substitute in y=21 and x=3, you will get k=7

y=7(5)

y= 35

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