Help with geometric mean with roots. Medal to best answer. Thanks!

question will be posted below.

Question

Help with geometric mean with roots. Medal to best answer. Thanks!







question will be posted below.

beccab003 · Answer

If the geometric mean of a and 30 is $$4\sqrt{15}$$ find the value of a

anonymous · Answer

Im read to help you! :)

beccab003 · Answer

I know how to do these problems. Just not with square roots. Thanks!!!! :)

anonymous · Answer

well.. is that 4 divided by 15?

anonymous · Answer

wait nevermind

anonymous · Answer

whats your choices?

anonymous · Answer

$$\sqrt{30a}=4\sqrt{15}$$solve for $a$

anonymous · Answer

Dis dude always taking my questions! Im out.. Tag me if you need help on anything else

beccab003 · Answer

Thanks @satellite73 but I still don't know how to continue the problem....with the roots.

directrix · Answer

First up, do you know the meaning of geometric mean?  
(If I am inadvertently butting into someone else's work, I will get out of the way.)

beccab003 · Answer

the geometric mean has something to do with the nth root it think.

directrix · Answer

If x is the geometric mean of positive numbers a and b, then the following is true:

a is to x as x is to b.

directrix · Answer

|dw:1421265092625:dw|