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chocodropa7

  • one year ago

The following is a rectangle. Find x and y using the information given. AB = 2x DC = -7y - 1 AD = x BC = -2y +10

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  1. chocodropa7
    • one year ago
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    |dw:1366268375485:dw|

  2. chocodropa7
    • one year ago
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    2(-2y+10)=-7y - 1 this is the equation I came up with so far

  3. chocodropa7
    • one year ago
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    HELOOO

  4. dave0616
    • one year ago
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    y and x will be the same for the whole rectangle, so if you set up an equation where 1 variable equals some numbers and the other variable that should help, im working on the problem now myself

  5. chocodropa7
    • one year ago
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    ok show when finished

  6. qweqwe123123123123111
    • one year ago
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    Neat puzzle! Drawing the diagram shows that x = -2y+10 and 2x = -7y-1 With these 2 equations, you can solve for y, and figure out x

  7. chocodropa7
    • one year ago
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    Can you solve please

  8. dave0616
    • one year ago
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    @qweqwe123123123123111 did you get the answer? if you did, message me, and let me know what you got so we can compare

  9. chocodropa7
    • one year ago
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    No I didn't get the answers Im stuck

  10. qweqwe123123123123111
    • one year ago
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    Yes, I can solve it. But the purpose of this board is to teach YOU how to solve it.

  11. dave0616
    • one year ago
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    i agree with @qweqwe123123123123111 i am not willing to just hand out answers

  12. chocodropa7
    • one year ago
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    -__-

  13. chocodropa7
    • one year ago
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    I have the equation set up I just need help solving

  14. dave0616
    • one year ago
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    well what are you equations?

  15. chocodropa7
    • one year ago
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    2(-2y+10)=-7y - 1

  16. chocodropa7
    • one year ago
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    I think not sure

  17. dave0616
    • one year ago
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    nope thats not it. remember that the top and bottom are equal, and the sides are equal. given that information, set up two equations

  18. chocodropa7
    • one year ago
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    Can you give example I don't know how to do that

  19. dave0616
    • one year ago
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    ok, so we know that ab is the top and the equation is 2x, and we know that dc is the bottom, and the equation is -7y-1. because it is a rectangle the top and bottom will be equal in size. so you can set the equations equal to each other: 2x=-7y-1. can you set up an equation for the sides?

  20. chocodropa7
    • one year ago
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    x=-2y+10

  21. dave0616
    • one year ago
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    correct. now pick one of the equations and solve for one of the variables. i decided to start with the equation for the sides. since it is already equal to x, you can plug that entire equation into x in the other equation. so it will look like: 2(-2y+10)=-7y-1 now solve for y, and post what you get so i can tell you if you are correct

  22. chocodropa7
    • one year ago
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    Dude that's exactly what I said the first time

  23. chocodropa7
    • one year ago
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    Thats the same equation I wrote and I said I'm having trouble solving it

  24. dave0616
    • one year ago
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    alright man, well i didnt recognize that. im sorry, you dont need to get so snippy man, just tryin to help. ok ok ok well now we know where we are.

  25. dave0616
    • one year ago
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    ok first you have the equation: 2(-2y+10)=-7y-1 Multiply 2 out: -4y+20=-7y-1 Collect the y's on one side 3y=-21 divide by 3 y=-7

  26. chocodropa7
    • one year ago
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    So for x do we plug it in one of the equations? If so which one?

  27. dave0616
    • one year ago
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    do you remember the equation we got for the top and bottom? plug what you got for y into the equation and solve for x

  28. chocodropa7
    • one year ago
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    ok one sec

  29. chocodropa7
    • one year ago
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    x=25 or 24?

  30. dave0616
    • one year ago
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    24 man. its 24

  31. chocodropa7
    • one year ago
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    I'm just making sure I get the right answer man, I can't afford to get anything wrong. WORK ON YOUR PATIENCE (JERK)

  32. dave0616
    • one year ago
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    dude, you are the one being a jerk, from the beginnning you had no patience. im not just gonna spit you an answer. im gonna make you wait for it man. my patience? i have no idea where you think im not being patient

  33. qweqwe123123123123111
    • one year ago
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    RELAX GANG!!! Once you found that y = -7, all you had to do to find x is remember that: x = -2y+10 With that you would replace all the "y"s with "-7" and figure it out: x = -2(-7)+10 which is: x = 14+10 which is x = 24

  34. chocodropa7
    • one year ago
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    First I give you the right eqation then you say its wrong, I ask simply if x is 24 or 25 and you call me a jerk. If I didn't ask and would've put 25 I wouldve gotten a 0 for my grade so excuse me for asking

  35. chocodropa7
    • one year ago
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    Thank You Q!

  36. dave0616
    • one year ago
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    i didnt realize it was the same equation man. my bad for not recognizing how you just spit out an equation without explaining how you got there. and you were the one who is like "i need an answer now now now" so w.e man.

  37. dave0616
    • one year ago
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    sorry for trying to make you do it, and not just give you an answer

  38. chocodropa7
    • one year ago
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    All good man and I never said that but w.e

  39. dave0616
    • one year ago
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    well you pretty much did man. but w.e im glad you got the answer, and have a good night

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