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arrelll
arrelll arrelll
  • 09-06-2016
  • Mathematics
Answered

if y varies with x^2 and y=36, when x=3, what is y when x=5?

Verified Answer :

nobillionaireNobley
nobillionaireNobley nobillionaireNobley
  • 11-06-2016

\(y=k x^{2} \\ 36=k \times (3) ^{2} = 9k \\ k=36/9=4\)
Therefore, when x = 5,
\(y=4 \times (5)^{2} = 4\times25 = 100\)

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