What is the geometric mean of 8 and 18?

1 Answer
Write your answer here...
Start with a one sentence answer
Then teach the underlying concepts
Don't copy without citing sources
preview
?

Answer

Write a one sentence answer...

Answer:

Explanation

Explain in detail...

Explanation:

I want someone to double check my answer

Describe your changes (optional) 200

8
Apr 18, 2016

Answer:

#12#

Explanation:

The geometric mean of two positive numbers #a# and #b# is #sqrt(ab)#. The ratio #a:sqrt(ab)# is equal to the ratio #sqrt(ab):b#.

So the geometric mean of #8# and #18# is:

#sqrt(8*18) = sqrt(144) = 12#

Notice that #12/8 = 3/2 = 18/12#

Was this helpful? Let the contributor know!
1500