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celinegirl

  • one year ago

Math Question: Solve −np − 80 < 60 for n.

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  1. celinegirl
    • one year ago
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    anyone? :( need help.

  2. anonymous
    • one year ago
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    where are you stuck?

  3. celinegirl
    • one year ago
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    @peachpi just the whole problem I don't understand.

  4. anonymous
    • one year ago
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    you're trying to get n by itself. Think reverse PEMDAS. The first thing you have to do is move the 80 to the other side. the 80 is subtracted, so to move it you need to ADD 80 to both sides of the inequality

  5. celinegirl
    • one year ago
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    Oh! Okay I understand the reverse part, but I never really understood where you have to add the number to both sides of the inequality.

  6. celinegirl
    • one year ago
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    @peachpi sorry forgot to tag you

  7. anonymous
    • one year ago
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    when you add, the 80 on the left will cancel. On the right, what's 60 + 80

  8. celinegirl
    • one year ago
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    @peachpi 140

  9. anonymous
    • one year ago
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    right. show me what your inequality looks like now. I just want to make sure we're on the same page

  10. celinegirl
    • one year ago
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    @peachpi wait im still confused

  11. anonymous
    • one year ago
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    we added 80 to both sides|dw:1444403350937:dw|

  12. anonymous
    • one year ago
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    now you should have this|dw:1444403417956:dw|

  13. celinegirl
    • one year ago
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    @peachpi ah okay! I understand now!

  14. anonymous
    • one year ago
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    so now divide both side by \(-p\), and flip the \(<\) sign to \(>\) since you're dividing by a negative

  15. anonymous
    • one year ago
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    |dw:1444403666243:dw|

  16. anonymous
    • one year ago
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    \[n>-\frac{ 140 }{ p }\]

  17. celinegirl
    • one year ago
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    @peachpi Oh okay! I get it. what would the answer be?

  18. anonymous
    • one year ago
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    that is the answer

  19. celinegirl
    • one year ago
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    @peachpi oh lol. I thought it would of just been a single number. As you can tell im not very good at math. Thank you so much for your help!(:

  20. anonymous
    • one year ago
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    you're welcome

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