chandislilly
Answered

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PLEASE HELP

Variable y varies directly with x2, and y = 75 when x = 5.



What is the value of y when x = 3?



y =

Sagot :

luana
[tex]y=75\ \ \ \ x=5\\\\ y=?\ \ \ \ \ x=3\\\\ proportion:\\ \frac{75}{y}=\frac{5}{3}\ \ \ | cross\ multiplication\\\\ 75*3=5y\\\\ 225=5y\ \ \ | divide\ by\ 5\\\\ y=45 [/tex]
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