Question

please help me
Find the Geometric Mean of the pair of numbers 3 and 12. *

Remember the Geometric Mean of two numbers a and b is found by taking a/x = x/b, where x is the Geometric Mean. Solve for x

Answer 1

Oh okay if we have to do it that way...we have

\[\large \frac{3}{x} =\frac{x}{12}\]

Cross multiply

\[\large x^2 = 36\]
\[\large x = \sqrt{36}\]
\[\large x = 6\]