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Mathematics
28 December, 17:10
What is the geometric mean of 9 and 16
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Roderick Russo
28 December, 17:20
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To find the geometric mean, write and solve 9/x = x/16.
Cross multiply the proportion: x² = 144
Square root both sides: x = plus or minus 12
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Benjamin Mclaughlin
28 December, 17:33
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12
Step-by-step explanation:
To find the geometric mean of 2 numbers, multiply them together and then take the square root
gm = sqrt (9*16)
sqrt (ab) = sqrt (a) sqrt (b)
= sqrt (9) sqrt (16)
= 3 * 4
gm = 12
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