Question

PLEASE HELP!!!

Find the geometric mean of 5 and 8. Write the exact answer--- do not round.

Answer 1

@ganeshie8 @Kainui

Answer 2

Multiply the two numbers and take the square root

Answer 3

the geometric mean of two numbers a and b is squareroot of product of a&b i.e. \[\sqrt{ab}\] so in this case it would be \[\sqrt{5*8}\] = 6.32

Answer 4

@ayyookyndall please see the solution

Answer 5

Oh okay. Can you guys help me with another question? @ribhu @wowok

Answer 6

yeah which question?

Answer 7

Sure! :)

Answer 8

You ned to set up a ratio first
\[x \div 4.3 = 14.8 \div 17.8\]

Answer 9

After that, cross multiply.

Answer 10

Is it a?

Answer 11

Ah I miss-typed the equation. It should be \[x \div 8.3 = 14.8 \div 17.8\]

Answer 12

how? @wowok

Answer 13

Is my answer correct?

Answer 14

yeah yours is correct @ayyookyndall

Answer 15

Yes! Sorry, I totally messed up the equation the first time. It's nearly 1am where I live. Good job!

Answer 16

the triangles would be similar hence 14.8/7.8 would be equal to x/8.3

Answer 17

Help with more?

Answer 18

Go for it! :)

Answer 19

The measures of the angles of a triangle are in the extended ratio 2:2:8. What is the measure of the smallest angle?
@wowok @ribhu

Answer 20

Is there a diagram?

Answer 21

let the angles be 2x, 2x and 8x and since the sum of all the angles in a triangle is 180 degrees so 2x+2x+8x = 180 =.12x=180 => x=15

Answer 22

No

Answer 23

all the angles would be
2x = 30,
2x = 30,
8x = 120

Answer 24

There is 12 parts then. So it has to equal 180

Answer 25

so each 2 will be 30 and the 8 is 120

Answer 26

yeah x would be any parameter which would make the angles in the ratio of 2:2:8

Answer 27

@ayyookyndall did u get it

Answer 28

Okay. yes... A couple more?

Answer 29

Sorry its looks bad

Answer 30

i am afraid the question is not clear @ayyookyndall

Answer 31

@ribhu

Answer 32

yeah i wil try

Answer 33

here triange APQ similar to triangle ABC

Answer 34

Here how about other one...
You dont have to do it if you dont know it.

Answer 35

AP/AB = AQ/AC
=> AP = 8, AB = 8+x, AQ = 12, AC = 12+18
so substituting the values we get
8/(8+x) = 12/30
so the equations becomes

Answer 36

Are you sure?

Answer 37

240 = 96 + 12x (upon cross multiplication)
x = 12 (final answer)
@ayyookyndall

Answer 38

yeah i am damn sure for this.