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What is the geometric mean of 3 and 15?. Answer. .A] 22.5. B] 45. C] 3 radical 5. D] 5 radical 3.

User Perdixo
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3/x = x/15
45 = x^2
√9 * √5 = √x^2
3√5 = x
or
x = 3√5
User Aakoch
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