Question

if x : 3 = 12 : x calculate the positive value of x

Answer 1

Answer:

if x : 3 = 12 : x

$\frac{x}{3} = \frac{12}{x} \\ by \: cross \: mutiplication \\ = > x {}^{2} = 12 \times 3 \\ = > x {}^{2} = 36 \\ = > x = \sqrt{36} \\ = > x = 6$

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