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anonymous

  • one year ago

Solve −np − 80 < 60 for n

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  1. anonymous
    • one year ago
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    \[-np - 80 < 60\]

  2. anonymous
    • one year ago
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    What do you think we would do first?

  3. anonymous
    • one year ago
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    add 80 to both sides

  4. anonymous
    • one year ago
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    Yep! Which we then get \[-np < 140\]

  5. anonymous
    • one year ago
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    So now we want to get the 'n' by itself right?

  6. anonymous
    • one year ago
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    divide by -n

  7. anonymous
    • one year ago
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    Well that is one way but there is a faster/ easier way to doing this. Try thinking of the problem like this: \[-1np\] We are able to divide the -1 to remove the negative on the 'np' side.

  8. anonymous
    • one year ago
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    so what is the answer

  9. anonymous
    • one year ago
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    and can u help me with another one

  10. anonymous
    • one year ago
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    \[np > 140\] Now because we divide by a negative, making us flip the sign. So the answer, if you were looking just for 'n', would be \[n > \frac{ 140 }{ p }\]

  11. anonymous
    • one year ago
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    Sure

  12. anonymous
    • one year ago
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    Solve 2a − 5d = 30 for d.

  13. anonymous
    • one year ago
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    Hmmm... I remember this type of equation specifically, however, I do not remember the way in which you were to solve it. I will try my best though.

  14. anonymous
    • one year ago
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    ok thank u

  15. anonymous
    • one year ago
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    But I think the answer would either be d = -6 or d = -3

  16. anonymous
    • one year ago
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    i think its -6

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