math questions?

Question

geometric mean of

1.) 2 & 18

2.) 0.25&400

3.)15 and 20

Answer 1

Geometric mean = √(xy)

√(xy) = √(2*18) = 6

√(xy) = √(0.25*400) = 10

√(xy) = √(15*20) = 10√3
.

Answer 2

Geometric mean of N numbers is the nth root of the product of those N numbers. Here each of the 3 data sets contain 2 numbers. So you will get the answers by multiplying both numbers in each problem and finding the square root. Remember if there were 3 numbers in the set then you have to find the cube-root of their products to get the GM

1) {(2)(18)}^(1/2) = 6
2 {(0.25)(400)}^0.5 = 10
3 {(15)(20)}^0.5 = 17.32

Good luck

Answer 3

i dont know