chandislilly
chandislilly chandislilly
  • 20-01-2015
  • Mathematics
Answered

PLEASE HELP
Variable y varies directly with x2, and y = 72 when x = 6.



What is the value of y when x = 4?



y =

Answer :

nate81 nate81
  • 20-01-2015
Y= k x 2x so when x=6 and y=72, we find k= 6 so when x=4 we get (12) x 2(4) and find y=96 :)
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