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20 November, 16:04

30 is the geometric mean between 9 and what number? Show your calculations.

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  1. 20 November, 16:55
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    30 is the geometric mean between 9 and 51.

    Step-by-step explanation:

    i multiplied 30 by 2 because there are two numbers in the set of numbers that have a mean of 30.

    30*2=60

    i then subtracted 9, working back from finding the mean,

    60-9=51.

    check your work!

    51+9=60/2=30

    your answer is 51
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