jillbaldassini567 jillbaldassini567

02-01-2019
Mathematics

contestada

What is the geometric mean of 9 and 16

Respuesta :

wegnerkolmp2741o wegnerkolmp2741o

02-01-2019

Answer:

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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02-01-2019

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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