Question

What is the geometric mean of 5 and 12?

A) 60

B) 8 1/2

C) 2 square root of 15

D) 30

Someone HELP ME PLZZZZZ

Answer 1

you there

Answer 2

use this example to calculate yours:

mean of 4,11 and 14...

arithmetic mean of 4 and 11 and 14 = add the terms... then divide by the number of terms
(4 + 11 + 14)/ 3 terms
= 29/3

geometric mean of 4 and 11 and 14 = multiply the terms... then find the nth root where n is the number of terms
cube root of (4 x 11 x 14)
= cube root of 616

Answer 3

note: cube root because there are 3 terms...
cube root looks like this:
\[\sqrt[3]{616}\]

Answer 4

so does that make sense now?

Answer 5

yea Igot 24.8

Answer 6

ok... what about for yours tho?

Answer 7

wym

Answer 8

geometric mean of 5 and 12
= sqrt (5 x 12)
=?

Answer 9

well 5x12=60 and the square root of 60=7.7

Answer 10

perfect
and 7.75 = 2 (sqrt15) ... so ur answer should be...? ;)

Answer 11

The square root of 15 = 3.87

Answer 12

yep, but just saying... ur options are A,B,C or D, so which one do u think is correct?

Answer 13

c

Answer 14

The square root of 15 = 3.87
so 2 x The square root of 15 = 2 x 3.87
= 7.75 = sqrt 60

Answer 15

yep, perfect man!