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lvasquev462

given y varies directly as x, and y=9 when x=3. Find y when x=11

  • 11 months ago
  • 11 months ago

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  1. brookester6
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    it would be 17

    • 11 months ago
  2. tcarroll010
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    y = ax 9 = a3 so a = 3 y = 3x y = (3)(11)

    • 11 months ago
  3. tcarroll010
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    So, y would equal 33.

    • 11 months ago
  4. brookester6
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    no.... it wouldn't

    • 11 months ago
  5. tcarroll010
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    Good luck to you in all of your studies and thx for the recognition! @lvasquev462

    • 11 months ago
  6. brookester6
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    O.o

    • 11 months ago
  7. lvasquev462
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    i have one more of these questions

    • 11 months ago
  8. brookester6
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    sure :P

    • 11 months ago
  9. tcarroll010
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    go right ahead, np.

    • 11 months ago
  10. lvasquev462
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    given y varies directly as x and y=4 when x=20. Find x when y=6

    • 11 months ago
  11. tcarroll010
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    y = ax 4 = a(20) a = (1/5) y = (1/5)x x = 5y x = (5)(6) = 30

    • 11 months ago
  12. brookester6
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    y=ax y=(20)(6)

    • 11 months ago
  13. brookester6
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    it'S 20 AND 6! URG

    • 11 months ago
  14. tcarroll010
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    So, all I did was basically the same thing, but the only twist here is that I flipped the "x" and "y". See that?

    • 11 months ago
  15. lvasquev462
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    yeah i seen tht

    • 11 months ago
  16. tcarroll010
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    So, with these "varying directly" problems, you can start out the same way in both cases. Nice working with you!

    • 11 months ago
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