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LifeIsADangerousGame

How do I find how many solutions are there to the following system of equations? 2x – y = 2 –x + 5y = 3

  • one year ago
  • one year ago

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  1. LifeIsADangerousGame
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    What I've done so far: 5(2x – y = 2) ----> 10x - 5y = 10 (–x + 5y = 3) ---> -x + 5y = 3 Cross out the 5y's.... 10x = 10 -x = 3 then I add so 9x/9 = 13/9

    • one year ago
  2. ajprincess
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    so x=13/9 apply this value in ur first eqn and find the value of y.

    • one year ago
  3. LifeIsADangerousGame
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    ohhh let me do it out one second please :P

    • one year ago
  4. ajprincess
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    oh k. I will wait.

    • one year ago
  5. LifeIsADangerousGame
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    Ah. idk how to do it :/

    • one year ago
  6. ajprincess
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    2x-y=2 2*13/9-y=2 nw can u do?

    • one year ago
  7. LifeIsADangerousGame
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    OH that's what I did wrong! I made it "y" and not x!

    • one year ago
  8. ajprincess
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    sorry. i didn't get u

    • one year ago
  9. LifeIsADangerousGame
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    No you're good :P I got y = 8.9 is that correct

    • one year ago
  10. ajprincess
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    it has to b 0.89

    • one year ago
  11. LifeIsADangerousGame
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    sorry, moved the decimal :P

    • one year ago
  12. LifeIsADangerousGame
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    So A. 0 B. 1 C. 2 D. infinitely many

    • one year ago
  13. LifeIsADangerousGame
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    Those are teh answers I can choose....how can I find which one it is?

    • one year ago
  14. ajprincess
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    only 1 solution

    • one year ago
  15. LifeIsADangerousGame
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    Could you explain to me why?

    • one year ago
  16. ajprincess
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    R u familiar with graphs?

    • one year ago
  17. LifeIsADangerousGame
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    Yes, and I thnik I found it in my book :P Thanks though

    • one year ago
  18. LifeIsADangerousGame
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    I hate graphs :P

    • one year ago
  19. LifeIsADangerousGame
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    Ooh I get it! Thanks so much :D

    • one year ago
  20. ajprincess
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    sure u got it. if nt I will explain. no problem

    • one year ago
  21. LifeIsADangerousGame
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    Nope, I think I'm good :) Would you mind helping me with the rest?

    • one year ago
  22. ajprincess
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    ha k. sure post them.

    • one year ago
  23. LifeIsADangerousGame
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    Thanks!

    • one year ago
  24. LifeIsADangerousGame
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    Write a system of equations to solve the following problem. Let c be the number of child tickets and a be the number of adult tickets. Each child ticket for a ride costs $3, while each adult ticket costs $5. If the ride collected a total of $115, and 33 tickets were sold, how many of each type of ticket were sold? My answer: 3c + 5a = 115 a + c = 33

    • one year ago
  25. ajprincess
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    u r right.

    • one year ago
  26. LifeIsADangerousGame
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    Thanks! I appreciate you helping me :)

    • one year ago
  27. ajprincess
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    u r welcome. :)

    • one year ago
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