Question

What is the geometric mean of 3 and 7?

Answer 1

sqrt of multiple

Answer 2

^^ I Agree With Estudier

Answer 3

so whats the answer then

Answer 4

He says its the square root of the multiple right so would it be the square root of 21?

Answer 5

So, GM of a,b,c..... is sqrt(a*b*c......)

Answer 6

I might be wrong but I thought it was the nth root if there are n numbers. For the case of two numbers, such as 3 and 7, square root would do. But for the GM of a, b,c... wouldn't it be nth root of (a*b*c*....etc)?

Answer 7

Do You Understand

Answer 8

Yes, ur right, not sqrt, kth root or whatever....sorry

Answer 9

No I do not. I am terrible at Geometry!

Answer 10

Okay Hold On

Answer 11

kk

Answer 12

Geometric Mean of a and b is \(\sqrt{ab}\)
so geometric mean of 3 and 7 will be
\(\huge \sqrt{3*7}=\sqrt{21}=?\)

Answer 13

I have to find the square root of 21.

Answer 14

its 4.5???

Answer 15

4.582575694955840006588047193728

Answer 16

if u want numerical answer then yes, find the square root, else if the answer can be in radical form, then leave it as
\(\sqrt{21}\)

Answer 17

These are the multiple choice answers

√21
2√6
2√7
21

Answer 18

so its 1st one, isn't it?

Answer 19

The Answer Is The Second One ,

Answer 20

why the second? we want sqrt(21).. which is the first choice

Answer 21

how do you know it's the second one?

Answer 22

Im Sorry It Is The 1st One Im Sorry ,

Answer 23

thanks everybody for you help :)

Answer 24

no problem, 1st one it is.

Answer 25

welcome :)

Answer 26

what about for 18 and 8

Answer 27

the geometric mean for 18 and 8... I would first multiply then square root

Answer 28

what do you think about that one? if you follow the same method, what should you get?

Answer 29

yes

Answer 30

\(\huge \sqrt {18*8}=?\)

Answer 31

12

Answer 32

yes good

Answer 33

i mean 144 but then square root it, it would equal 12

Answer 34

12 it is :)

Answer 35

Alright thanks!

Answer 36

just make sure, that if there are more than two numbers, you take the appropriate root. :)

Answer 37

Can I ask you guys another question

Answer 38

yeah

Answer 39

What are the values of a and b?
a = 20, b = 2√101
a = 20, b = 20√101
a = 30, b = 2√101
a = 400, b = 404

Answer 40

wait I need to put a picture