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Amy876

  • 3 years ago

-5/8c = 20 a. -34 b. -32 c. 32 d. 34

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  1. ajprincess
    • 3 years ago
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    1.Multiply both sides by 8 2.divide by -5 both sides

  2. Amy876
    • 3 years ago
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    That doesn't work

  3. ajprincess
    • 3 years ago
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    |dw:1347991198303:dw||dw:1347991271931:dw|

  4. livelaughlilz
    • 3 years ago
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    This is a proportion. -5/8c = 20/1 To solve a proportion, cross multiply 20(8c) = -5(1) 160c = -5 Then divide both sides by 160 c = -5/160 c = -1/32

  5. Amy876
    • 3 years ago
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    Ok which is it -32 or 32??

  6. ajprincess
    • 3 years ago
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    what do u think?

  7. ajprincess
    • 3 years ago
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    -32 or 32?

  8. livelaughlilz
    • 3 years ago
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    check both of them in the original equation

  9. Amy876
    • 3 years ago
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    with 32 I got -20 and with -32 it was WAY off, I'm confused now....

  10. livelaughlilz
    • 3 years ago
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    i already said it's -1/32

  11. livelaughlilz
    • 3 years ago
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    This is a proportion. -5/8c = 20/1 To solve a proportion, cross multiply 20(8c) = -5(1) 160c = -5 Then divide both sides by 160 c = -5/160 c = -1/32

  12. Amy876
    • 3 years ago
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    -1/32 is NOT an option

  13. ajprincess
    • 3 years ago
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    |dw:1347991694227:dw| Decide nw.

  14. livelaughlilz
    • 3 years ago
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    -1/32 checks... in addition this calculator said -1/32 is right as well: http://www.wolframalpha.com/input/?i=-5+%2F+8x+%3D+20 the multiple choice options are all wrong

  15. Amy876
    • 3 years ago
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    It was -32 Thanks AJ Princess! <3

  16. ajprincess
    • 3 years ago
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    yw.:)

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