Question

What's the percent of change for 18. To 10

Answer 1

I gave you the formula for this.

Answer 2

Is it 80%

Answer 3

Did you input the values into the formula?

Answer 4

I think so is it 80

Answer 5

I'm going to go over this one last time

Answer 6

did you delete the previous question?

Answer 7

\[{{new - old} \over old} * 100\]

Answer 8

The general formula for percent change is as follows:

\[\% \Delta = \frac{|a-b|}{a} \times100\]

where a = original amount, b = new amount

In this case, a = 18 , b = 10

Plug the numbers in and solve.

Answer 9

Ok what do you come up with

Answer 10

you first. I did the last one for you already.

Answer 11

This involves simple arithmetic

Answer 12

I said it already if it's not 80 then is it 44.4 repeating

Answer 13

Yes, it is 44.4%

Answer 14

It's not 80. Never was, never will be. How you got 80 perplexes me.

Answer 15

No, it stupifies me.

Answer 16

Ok that's what I though but then the first one you didn't make sense

Answer 17

I posted the same exact formula. Nothing changed.

Answer 18

Don't say what I wrote doesn't make sense. It's not me that isn't making sense.

Answer 19

So the first answer was 33.3 repeating or 25 as you said

Answer 20

Just 25% not 33

Do you understand what the absolute value symbols mean?

Answer 21

|| means |-x| = x

In other words |-5| = 5

So basically, when you evaluate using the absolute value, you drop the negative and use only the positive value. How you're getting two values...I don't know. Don't pay attention to that other guy's formula. It will only confuse you.

Answer 22

It was 15 to 20 20-15 is 5 5*100 500/15 is 33.3

Answer 23

5/20 = 1/4 = 25% That's the solution to the first one. You're doing some incorrect math there.

In the first one, a = 15, b = 20

a = the original amount, b = new amount

15 is the original amount, 20 is the new amount

Don't confuse yourself.

Answer 24

You multiply by 100 LAST

Answer 25

You have to divide before multiplying by 100

Answer 26

Ok I'll just go with your answer and when we check it in class tomorrow I'll just see

Answer 27

Yes, and make sure you get back to me when you find that 25% is the correct answer.

Answer 28

Oh yea I'll get back to you

Answer 29

Hmm, I just checked my own answer. It really is 33.3%

Answer 30

I take my foot out of my mouth. You are correct

Answer 31

Nevertheless, the formula is correct. Use it.

Answer 32

Oh I've been using it and I have been getting the correct answers

Answer 33

Great. That's all that matters.

Answer 34

Btw this made my day it was fun arguing with you thanks

Answer 35

lol

Answer 36

Yeah, I'm not perfect

Answer 37

Oh yea I know

Answer 38

Hero! What rubbish are you posting here?

If |-x| = -x IFF x<= 0

Otherwise, |-x| = x if x>=0

Answer 39

I'd rather define it as

|-x| = -x if x<0

and

|-x| = x if x>=0