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anonymous

  • 4 years ago

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

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  1. Hero
    • 4 years ago
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    I gave you the formula for this.

  2. anonymous
    • 4 years ago
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    Is it 80%

  3. Hero
    • 4 years ago
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    Did you input the values into the formula?

  4. anonymous
    • 4 years ago
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    I think so is it 80

  5. Hero
    • 4 years ago
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    I'm going to go over this one last time

  6. Hero
    • 4 years ago
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    did you delete the previous question?

  7. slaaibak
    • 4 years ago
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    \[{{new - old} \over old} * 100\]

  8. Hero
    • 4 years ago
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    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.

  9. anonymous
    • 4 years ago
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    Ok what do you come up with

  10. Hero
    • 4 years ago
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    you first. I did the last one for you already.

  11. Hero
    • 4 years ago
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    This involves simple arithmetic

  12. anonymous
    • 4 years ago
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    I said it already if it's not 80 then is it 44.4 repeating

  13. Hero
    • 4 years ago
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    Yes, it is 44.4%

  14. Hero
    • 4 years ago
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    It's not 80. Never was, never will be. How you got 80 perplexes me.

  15. Hero
    • 4 years ago
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    No, it stupifies me.

  16. anonymous
    • 4 years ago
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    Ok that's what I though but then the first one you didn't make sense

  17. Hero
    • 4 years ago
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    I posted the same exact formula. Nothing changed.

  18. Hero
    • 4 years ago
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    Don't say what I wrote doesn't make sense. It's not me that isn't making sense.

  19. anonymous
    • 4 years ago
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    So the first answer was 33.3 repeating or 25 as you said

  20. Hero
    • 4 years ago
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    Just 25% not 33 Do you understand what the absolute value symbols mean?

  21. Hero
    • 4 years ago
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    || 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.

  22. anonymous
    • 4 years ago
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    It was 15 to 20 20-15 is 5 5*100 500/15 is 33.3

  23. Hero
    • 4 years ago
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    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.

  24. Hero
    • 4 years ago
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    You multiply by 100 LAST

  25. Hero
    • 4 years ago
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    You have to divide before multiplying by 100

  26. anonymous
    • 4 years ago
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    Ok I'll just go with your answer and when we check it in class tomorrow I'll just see

  27. Hero
    • 4 years ago
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    Yes, and make sure you get back to me when you find that 25% is the correct answer.

  28. anonymous
    • 4 years ago
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    Oh yea I'll get back to you

  29. Hero
    • 4 years ago
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    Hmm, I just checked my own answer. It really is 33.3%

  30. Hero
    • 4 years ago
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    I take my foot out of my mouth. You are correct

  31. Hero
    • 4 years ago
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    Nevertheless, the formula is correct. Use it.

  32. anonymous
    • 4 years ago
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    Oh I've been using it and I have been getting the correct answers

  33. Hero
    • 4 years ago
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    Great. That's all that matters.

  34. anonymous
    • 4 years ago
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    Btw this made my day it was fun arguing with you thanks

  35. Hero
    • 4 years ago
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    lol

  36. Hero
    • 4 years ago
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    Yeah, I'm not perfect

  37. anonymous
    • 4 years ago
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    Oh yea I know

  38. slaaibak
    • 4 years ago
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    Hero! What rubbish are you posting here? If |-x| = -x IFF x<= 0 Otherwise, |-x| = x if x>=0

  39. slaaibak
    • 4 years ago
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    I'd rather define it as |-x| = -x if x<0 and |-x| = x if x>=0

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