Question

what is the value of X http://static.k12.com/bank_packages/files/media/26e5f59842f74b42b491ec0dd4bf15bf.png

Answer 1

Hello there!

Answer 2

If a/b = c/d, we know that a*d=b*c, right?

Answer 3

Apply this and see what you get.

Answer 4

wait i dont understand

Answer 5

Ok first set up or write down the porportion

Answer 6

These are arbitrary numbers.

Answer 7

If 1/2 = 2/4, then 1*4 = 2*2.

Answer 8

See how this works?

Answer 9

Then cross muiltply. 5.6 * 24 and 8 * x

Answer 10

._.

Answer 11

134.4 = 8x

Answer 12

divide 8 on both sides. 134.4/8. What's wrong liam

Answer 13

im still confused

Answer 14

No, I just wanted to explain to her how cross-multiplication works.

Answer 15

ooohhh my bad. sorry.

Answer 16

No, it is totally fine.

Answer 17

Anyways, samantha.

Answer 18

If a/b = c/d,

Answer 19

ad/b = c
Right?

Answer 20

We multiply both sides by d.

Answer 21

so multiply 5.6 and 24 by 8

Answer 22

Yeah.

Answer 23

Wait, no.

Answer 24

Multiply both sides by 24.

Answer 25

(24*5.6)/8 = x

Answer 26

Get it?

Answer 27

so it is 192

Answer 28

Whoa, no.

Answer 29

5.6, not 56.

Answer 30

44.8

Answer 31

No, sorry.

Answer 32

i am so lost here

Answer 33

(24*5.6)/8 = x.

Answer 34

Evaluate (24*5.6), please.

Answer 35

Then divide it by 8.

Answer 36

16.8

Answer 37

Yep!

Answer 38

ok thanks

Answer 39

You are welcome! Remember this trick, it is useful.
Have a nice day!