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anonymous

  • 5 years ago

90/5+4*2-1=19? how do I do this?!

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  1. anonymous
    • 5 years ago
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    take it daniel and rsvitale

  2. anonymous
    • 5 years ago
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    90/5+4*2-1 is equal to 25 not 19. 90/5=18, (4*2)-1=7, 18+7=25. Can you tell us what the question was asking exactly?

  3. anonymous
    • 5 years ago
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    GUYS I NEED AN ANSWER FAST!

  4. anonymous
    • 5 years ago
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    90/(5+4) = 10 10*2 -1 =19

  5. anonymous
    • 5 years ago
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    Thats the question, I have to figure out that equation...

  6. anonymous
    • 5 years ago
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    oh you need to use parenthesis Mia

  7. anonymous
    • 5 years ago
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    Yeah Can you help?

  8. anonymous
    • 5 years ago
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    it should be written ((90/(5+4))*2)-1. This is equal to 19. I used more parenthesis than necessary to be clear.

  9. anonymous
    • 5 years ago
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    Thanks SOOO much

  10. anonymous
    • 5 years ago
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    I need help now on solving it

  11. anonymous
    • 5 years ago
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    ok first we add 5 and 4 to get 9. so 90/(5+4)=90/9=10. Then we take that piece and multiply it by 2. 2*10=20. Finally we subtract 1. 20-1=19

  12. anonymous
    • 5 years ago
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    the parenthesis indicate order of operations

  13. anonymous
    • 5 years ago
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    does that make sense or do you have any questions?

  14. anonymous
    • 5 years ago
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    Yep, that makes perfect sense... um lemme check hang on

  15. anonymous
    • 5 years ago
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    By inserting one pair of parenthesis at different places in 100-3^2+5*4-6/2 find as many different ways of evaluating the expression as you can.

  16. anonymous
    • 5 years ago
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    ok i think there are many ways to get a different answer. (100-3)^2+5*4-6/2, 100-3^2+(5*4-6)/2, (100-3^2+5*4-6)/2, are several groupings that give different answers. try to think of some more.

  17. anonymous
    • 5 years ago
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    the parenthesis make a big difference; for example 100-3^2=91 but (100-3)^2=9409

  18. anonymous
    • 5 years ago
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    Oh yeah....i see..

  19. anonymous
    • 5 years ago
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    how many more ways are there?

  20. anonymous
    • 5 years ago
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    that depends on how it is written. Is the 3^2 actually written with a carat "^" symbol or just as a superscript

  21. anonymous
    • 5 years ago
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    there are a bunch of ways to do it if we are just writing it as it's typed but if it is written a certain way in a text book there are less possibilities I would have to know exactly how it was written

  22. anonymous
    • 5 years ago
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    the exponent is up in the right corner of the "3"

  23. anonymous
    • 5 years ago
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    so not a carat

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