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LifeIsADangerousGame

  • 3 years ago

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

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  1. LifeIsADangerousGame
    • 3 years ago
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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

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

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

  4. ajprincess
    • 3 years ago
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    oh k. I will wait.

  5. LifeIsADangerousGame
    • 3 years ago
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    Ah. idk how to do it :/

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

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

  8. ajprincess
    • 3 years ago
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    sorry. i didn't get u

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

  10. ajprincess
    • 3 years ago
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    it has to b 0.89

  11. LifeIsADangerousGame
    • 3 years ago
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    sorry, moved the decimal :P

  12. LifeIsADangerousGame
    • 3 years ago
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    So A. 0 B. 1 C. 2 D. infinitely many

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

  14. ajprincess
    • 3 years ago
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    only 1 solution

  15. LifeIsADangerousGame
    • 3 years ago
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    Could you explain to me why?

  16. ajprincess
    • 3 years ago
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    R u familiar with graphs?

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

  18. LifeIsADangerousGame
    • 3 years ago
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    I hate graphs :P

  19. LifeIsADangerousGame
    • 3 years ago
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    Ooh I get it! Thanks so much :D

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

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

  22. ajprincess
    • 3 years ago
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    ha k. sure post them.

  23. LifeIsADangerousGame
    • 3 years ago
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    Thanks!

  24. LifeIsADangerousGame
    • 3 years ago
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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

  25. ajprincess
    • 3 years ago
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    u r right.

  26. LifeIsADangerousGame
    • 3 years ago
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    Thanks! I appreciate you helping me :)

  27. ajprincess
    • 3 years ago
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    u r welcome. :)

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