arrelll arrelll

09-06-2016
Mathematics

contestada

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

Respuesta :

nobillionaireNobley nobillionaireNobley

12-06-2016

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

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