## anonymous 3 years ago Determine the geometric mean of 5 and 8.

1. anonymous

$\frac{ 5 }{ x } = \frac{ x }{ 8 }$

2. anonymous

40=4*10 sqrt40=sqrt(4*10) sqrt40=sqrt4*sqrt10 sqrt40=2*sqrt10

3. anonymous

Cross multiply. $x^{2} = 40$ Where does the 10 come in? Did you divide?

4. anonymous

2 sqrt(10)~~6.32456

5. anonymous

I see. You eliminated the exponent and then square root 40. Okay, got it. :)