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anonymous

  • one year ago

WILL MEDAL AND FAN Solve for m: 18d – 2m + 9k < 5k + 10. m > –7k – 9d + 5 m < –7k – 9d + 5 m > 2k + 9d – 5 m < 2k + 9d – 5

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  1. anonymous
    • one year ago
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    hello again

  2. anonymous
    • one year ago
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    Hey

  3. anonymous
    • one year ago
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    first get -2m by itself

  4. anonymous
    • one year ago
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    subtract 9k?

  5. anonymous
    • one year ago
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    yep and 18d

  6. anonymous
    • one year ago
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    ok... so 5k = 9k?

  7. anonymous
    • one year ago
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    nope, 5k-9k

  8. anonymous
    • one year ago
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    that is what I meant

  9. anonymous
    • one year ago
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    so you should end up with -2m < -4k - 18d + 10

  10. anonymous
    • one year ago
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    what's the last step?

  11. anonymous
    • one year ago
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    subtract 10?

  12. anonymous
    • one year ago
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    nope, keep the 10 on the right side. We need to get rid of the -2 on the m. how would we do that?

  13. anonymous
    • one year ago
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    divide?

  14. anonymous
    • one year ago
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    yep, by what?

  15. anonymous
    • one year ago
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    -2?

  16. anonymous
    • one year ago
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    that's right. What do you get?

  17. anonymous
    • one year ago
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    how do you divide the whole right side by -2?

  18. anonymous
    • one year ago
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    divide each individual terms by -2

  19. anonymous
    • one year ago
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    *term

  20. anonymous
    • one year ago
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    -4 -18 10 -2 -9 5

  21. anonymous
    • one year ago
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    no, what happens when you divide two negative numbers?

  22. anonymous
    • one year ago
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    oh lol positive for all but -5

  23. anonymous
    • one year ago
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    that's right

  24. anonymous
    • one year ago
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    and when you divide by a negative number the inequality sign changes

  25. anonymous
    • one year ago
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    so c or d

  26. anonymous
    • one year ago
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    in this case, it goes from < to >

  27. anonymous
    • one year ago
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    so what does the final inequality look like?

  28. anonymous
    • one year ago
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    i meant a or c

  29. anonymous
    • one year ago
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    that's right

  30. anonymous
    • one year ago
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    c?

  31. anonymous
    • one year ago
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    correct

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spraguer (Moderator)
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