What is the geometric mean of 3 and 15?

45

5 radical 3

3 radical 5

22.5

Question

What is the geometric mean of 3 and 15?

45 

 5 radical 3 

 3 radical 5 

 22.5

anonymous · Answer

the geometric mean of $a$ and $b$ is $\sqrt{ab}$ 
in your example a first step is $\sqrt{3\times 15}$

anonymous · Answer

so wait sqrt means? square ...or square root?

anonymous · Answer

square is $x^2$ square root is $\sqrt{x}$

anonymous · Answer

if you are looking literally at "sqrt" refresh your browser to see the symbols
you should see symbols, not code

anonymous · Answer

I still see the same even after I refreshed the browser. okay so im suppose to squareroot is 3 times it 15 and I will get my answer?

anonymous · Answer

yes

anonymous · Answer

i get 25.9 as my answer and if i round it, its 29.10 but that's not a answer choice