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anonymous

  • one year ago

ABCD is a parallelogram. If AB = 2x - y, CD = 7, BC = x + y , AD = 2 find x and y.

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  1. anonymous
    • one year ago
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  2. Loser66
    • one year ago
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    it is a parallelogram, hence AB = CD and BC = AD plug the given information in, what do you get for AB = CD?

  3. anonymous
    • one year ago
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    2x - y =7

  4. anonymous
    • one year ago
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    and BC = AD is x + y =2

  5. anonymous
    • one year ago
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    did u get ur answer?

  6. Loser66
    • one year ago
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    how about AB = CD?

  7. anonymous
    • one year ago
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    I don't know how to get the answer, like do I make both equations equal to each other or solve one at a time?

  8. Loser66
    • one year ago
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    I am guiding you, just answer my questions, AB = CD gives you what??

  9. anonymous
    • one year ago
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    2x - y = 7

  10. Loser66
    • one year ago
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    Ok now you have 2 equations x+y = 2 2x-y = 7 -------------- add them together, what do you get?

  11. anonymous
    • one year ago
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    3x = 9

  12. Loser66
    • one year ago
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    |dw:1439252881954:dw|

  13. Loser66
    • one year ago
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    ok, divide both sides by 3, what do you get?

  14. anonymous
    • one year ago
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    x = 3 |dw:1439252921534:dw|

  15. Loser66
    • one year ago
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    hold on, something is wrong.

  16. Loser66
    • one year ago
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    Please, check your problem, it is NOT right for sure

  17. Loser66
    • one year ago
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    Can you please, take a snapshot or scan the original one??

  18. anonymous
    • one year ago
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  19. Loser66
    • one year ago
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    oh, nothing is wrong. hehehe. I am sorry. Ok, x =3 replace to x+y =2, y =??

  20. anonymous
    • one year ago
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    y = -1?

  21. Loser66
    • one year ago
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    Bingo, you got it.

  22. anonymous
    • one year ago
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    Thank yoU! :)

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