Three-fifth of the square of a certain number | vedclass

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Question

(A) Let the number be $x$.According to the problem,the equation is:$\frac{3}{5} 	imes x^{2} = 126.15$Multiply both sides by $\frac{5}{3}$ to isolate

Vedclass · Accepted Answer

$14.5$

Vedclass · Answer

(A) Let the number be $x$.According to the problem,the equation is:$\frac{3}{5} 	imes x^{2} = 126.15$Multiply both sides by $\frac{5}{3}$ to isolate $x^{2}$:$x^{2} = \frac{126.15 	imes 5}{3}$$x^{2} = 42.05 	imes 5$$x^{2} = 210.25$Now,take the square root of both sides to find $x$:$x = \sqrt{210.25}$$x = 14.5$

Three-fifth of the square of a certain number is $126.15$. What is the number?

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