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Orlov [11]
3 years ago
15

What is the geometric mean of 9 and 18

Mathematics
1 answer:
klemol [59]3 years ago
5 0

\cfrac{9}{x}~~ = ~~\cfrac{x}{18}\implies 162=x^2\implies \sqrt{162}=x\implies \sqrt{9^2\cdot 2}=x\implies 9\sqrt{2}=x

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