anonymous
  • anonymous
What's the percent of change for 18. To 10
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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schrodinger
  • schrodinger
I got my questions answered at brainly.com in under 10 minutes. Go to brainly.com now for free help!
Hero
  • Hero
I gave you the formula for this.
anonymous
  • anonymous
Is it 80%
Hero
  • Hero
Did you input the values into the formula?

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More answers

anonymous
  • anonymous
I think so is it 80
Hero
  • Hero
I'm going to go over this one last time
Hero
  • Hero
did you delete the previous question?
slaaibak
  • slaaibak
\[{{new - old} \over old} * 100\]
Hero
  • Hero
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.
anonymous
  • anonymous
Ok what do you come up with
Hero
  • Hero
you first. I did the last one for you already.
Hero
  • Hero
This involves simple arithmetic
anonymous
  • anonymous
I said it already if it's not 80 then is it 44.4 repeating
Hero
  • Hero
Yes, it is 44.4%
Hero
  • Hero
It's not 80. Never was, never will be. How you got 80 perplexes me.
Hero
  • Hero
No, it stupifies me.
anonymous
  • anonymous
Ok that's what I though but then the first one you didn't make sense
Hero
  • Hero
I posted the same exact formula. Nothing changed.
Hero
  • Hero
Don't say what I wrote doesn't make sense. It's not me that isn't making sense.
anonymous
  • anonymous
So the first answer was 33.3 repeating or 25 as you said
Hero
  • Hero
Just 25% not 33 Do you understand what the absolute value symbols mean?
Hero
  • Hero
|| 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.
anonymous
  • anonymous
It was 15 to 20 20-15 is 5 5*100 500/15 is 33.3
Hero
  • Hero
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.
Hero
  • Hero
You multiply by 100 LAST
Hero
  • Hero
You have to divide before multiplying by 100
anonymous
  • anonymous
Ok I'll just go with your answer and when we check it in class tomorrow I'll just see
Hero
  • Hero
Yes, and make sure you get back to me when you find that 25% is the correct answer.
anonymous
  • anonymous
Oh yea I'll get back to you
Hero
  • Hero
Hmm, I just checked my own answer. It really is 33.3%
Hero
  • Hero
I take my foot out of my mouth. You are correct
Hero
  • Hero
Nevertheless, the formula is correct. Use it.
anonymous
  • anonymous
Oh I've been using it and I have been getting the correct answers
Hero
  • Hero
Great. That's all that matters.
anonymous
  • anonymous
Btw this made my day it was fun arguing with you thanks
Hero
  • Hero
lol
Hero
  • Hero
Yeah, I'm not perfect
anonymous
  • anonymous
Oh yea I know
slaaibak
  • slaaibak
Hero! What rubbish are you posting here? If |-x| = -x IFF x<= 0 Otherwise, |-x| = x if x>=0
slaaibak
  • slaaibak
I'd rather define it as |-x| = -x if x<0 and |-x| = x if x>=0

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