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Mathematics 14 Online
OpenStudy (anonymous):

please help... solve for x i'll draw out the problem

OpenStudy (anonymous):

|dw:1348196000973:dw|

OpenStudy (anonymous):

So you want 5x + 125 = 3x + 15?

OpenStudy (anonymous):

i tried that and i got x=-55, but I got it wrong

OpenStudy (anonymous):

well the line that is going from left to right is wrong..

OpenStudy (anonymous):

Because that indicates negative slope, which would be -x in the equation

OpenStudy (anonymous):

So does that mean it's -5x + 125?

OpenStudy (anonymous):

i dont know. all i know is that their linear

OpenStudy (anonymous):

Is that all you were given?

OpenStudy (anonymous):

no but on my paper it indicates it. im going to take a picture of it and post it so you can see

hartnn (hartnn):

those angles are supplementary--->sum = 180 5x+125 + 3x+15 =180 now solve for x.

OpenStudy (anonymous):

oh so you add them together?

hartnn (hartnn):

Added and equated the sum to 180, because thats the property of supplementary angles.

OpenStudy (anonymous):

is the answer 35 ?

hartnn (hartnn):

8x+140=180 8x=40 x=5

OpenStudy (anonymous):

x=5 ?

hartnn (hartnn):

yup.

OpenStudy (anonymous):

x = 5 degrees?

hartnn (hartnn):

oh, yes...it must be degrees, because 180 i wrote is in degrees.

OpenStudy (anonymous):

oh ok, can i ask you like 2 more questions?

hartnn (hartnn):

and the angles are 150 and 30. new question, new post,please :)

OpenStudy (anonymous):

wait so what's the actual answer? sorry

hartnn (hartnn):

u wanted to find x. so final answer = x=5 degrees.

OpenStudy (anonymous):

oh ok let me draw out the next question thanks

OpenStudy (anonymous):

|dw:1348196926616:dw| name an angle supplementary to <DOE

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