Question

Find the geometric mean of 7 and 9.

A.
2004-04-01-01-00_files/i0220000.jpg
B.
2004-04-01-01-00_files/i0220003.jpg
C.
2004-04-01-01-00_files/i0220001.jpg
D.
2004-04-01-01-00_files/i0220002.jpg

Answer 1

um.... What are the answer choices?

Answer 2

a. 3 square root of 7
b. square root of 70
c.6 square root of 2
d. 63

Answer 3

ok

Answer 4

So if you do the math you end up with \[\sqrt{63}\]

Answer 5

And do you know what the squareroot of 63 is??

Answer 6

And no its not D

Answer 7

7.9

Answer 8

(not sure of the actuall name) but you have to tree factor since you cant end up with a decimal

Answer 9

geometric mean of n numbers is given by
\[G_{n}=(a_{1} \times a_{2} \times a_{3} \times ..... \times a_{n})^{\frac{1}{n}}\]
for 2 numbers,
\[G_{2}=(a_{1} \times a_{2})^{\frac{1}{2}}=\sqrt{a_{1}a_{2}}\]

Answer 10

im still lost