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18 July, 20:06

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

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  1. 18 July, 20:26
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    3/x = x/15

    45 = x^2

    √9 * √5 = √x^2

    3√5 = x

    or

    x = 3√5
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