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heathernelly

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  • one year ago
  • one year ago

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  1. CalebBeavers
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    What are your answers?

    • one year ago
  2. heathernelly
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    x=.75

    • one year ago
  3. heathernelly
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    it's not two equations, it's like one all together

    • one year ago
  4. CalebBeavers
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    Yeah, x= .75 isnt right. Solve for y in one of the equations, then plug that expression in for y into the other. Then you can solve for x

    • one year ago
  5. heathernelly
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    okay, one sec then

    • one year ago
  6. heathernelly
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    2.5x-3(3.25x-y)=-13? :S

    • one year ago
  7. CalebBeavers
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    You did that wrong. The purpose is to have one variable to solve for. You still have 2. lets solve for y in the second equation y=3.25x+14 now plug the expression into the other equation for y 2.5x-3(3.25x+14)=-13 now solve for x

    • one year ago
  8. CalebBeavers
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    2.5x-9.75x-42=-13 -7.25x=29 x=?

    • one year ago
  9. heathernelly
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    i had the math right, for some reason though, i put -13+42=27 :S oops. thanks! is that all i have to do?

    • one year ago
  10. CalebBeavers
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    What did you get for x? dont you wanna solve for y also?

    • one year ago
  11. heathernelly
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    -.25

    • one year ago
  12. heathernelly
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    just plug it into the second equation to get y? :/

    • one year ago
  13. CalebBeavers
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    If you're doing systems of equations i assume you should know how to solve a simple equation...i did all of it except one step.. x=29/-7.25 x=-4

    • one year ago
  14. CalebBeavers
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    Input -4 into one of the equations for x and then solve for y

    • one year ago
  15. heathernelly
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    thank youu (:

    • one year ago
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