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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- anonymous

|dw:1366268375485:dw|

- anonymous

2(-2y+10)=-7y - 1
this is the equation I came up with so far

- anonymous

HELOOO

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## More answers

- anonymous

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

- anonymous

ok show when finished

- anonymous

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

- anonymous

Can you solve please

- anonymous

@qweqwe123123123123111 did you get the answer? if you did, message me, and let me know what you got so we can compare

- anonymous

No I didn't get the answers Im stuck

- anonymous

Yes, I can solve it.
But the purpose of this board is to teach YOU how to solve it.

- anonymous

i agree with @qweqwe123123123123111 i am not willing to just hand out answers

- anonymous

-__-

- anonymous

I have the equation set up I just need help solving

- anonymous

well what are you equations?

- anonymous

2(-2y+10)=-7y - 1

- anonymous

I think not sure

- anonymous

nope thats not it. remember that the top and bottom are equal, and the sides are equal. given that information, set up two equations

- anonymous

Can you give example I don't know how to do that

- anonymous

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?

- anonymous

x=-2y+10

- anonymous

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

- anonymous

Dude that's exactly what I said the first time

- anonymous

Thats the same equation I wrote and I said I'm having trouble solving it

- anonymous

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.

- anonymous

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

- anonymous

So for x do we plug it in one of the equations? If so which one?

- anonymous

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

- anonymous

ok one sec

- anonymous

x=25 or 24?

- anonymous

24 man. its 24

- anonymous

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

- anonymous

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

- anonymous

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

- anonymous

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

- anonymous

Thank You Q!

- anonymous

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.

- anonymous

sorry for trying to make you do it, and not just give you an answer

- anonymous

All good man and I never said that but w.e

- anonymous

well you pretty much did man. but w.e im glad you got the answer, and have a good night

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