Question

what is the geometric mean of 3 and 21?
A) 3 square root of 7
B) 7 square root of 3
C) 31.5
D) 63

Answer 1

A

Answer 2

\[GM = \sqrt{ab}\]

In this case, a = 3, b = 21

Answer 3

\[\sqrt{3 * 21}\]\[\sqrt{63}\]\[\sqrt{9}\sqrt{7}\]
\[3\sqrt{7}\]

Answer 4

3 square root of seven

Answer 5

yes