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ChanellyRodriguez

  • 3 years ago

Solve: |-7x| > 21 A. -3 < x < 3 B. -3 > x < 3 C. x > -3 D. x < -3 or x > 3

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  1. ChanellyRodriguez
    • 3 years ago
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    absolute value

  2. zaynahf
    • 3 years ago
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    |dw:1358187824592:dw|

  3. ChanellyRodriguez
    • 3 years ago
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    thank you that really explains it.:D

  4. zaynahf
    • 3 years ago
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    No problem!

  5. ChanellyRodriguez
    • 3 years ago
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    so would it be d?or c

  6. cwrw238
    • 3 years ago
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    7x > 21 so x > 3 now try solving the other inequation

  7. cwrw238
    • 3 years ago
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    -7x > 21

  8. cwrw238
    • 3 years ago
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    divide both sides by -7 is the first thing you do

  9. ChanellyRodriguez
    • 3 years ago
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    ok

  10. cwrw238
    • 3 years ago
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    then what?

  11. cwrw238
    • 3 years ago
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    check out zaynaf's post

  12. ChanellyRodriguez
    • 3 years ago
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    flip the sign

  13. cwrw238
    • 3 years ago
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    right

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