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anonymous
 4 years ago
Twelve is the geometric mean of 9 and what number?
anonymous
 4 years ago
Twelve is the geometric mean of 9 and what number?

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ash2326
 4 years ago
Best ResponseYou've already chosen the best response.0geometric mean of two numbers a and b is given by= \(\sqrt{ab}\) here geometric mean is 12, a is 9 , we've to find b \[12=\sqrt{9b}\] square both sides \[144=9b\] divide both sides by 9 we get \[16=b\] the other no. is 16
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