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Mathematics 7 Online
OpenStudy (anonymous):

Find the measure of angle CBA.

OpenStudy (anonymous):

OpenStudy (anonymous):

what is the meaning of the arrows that point to the equations that hvae the x term.

OpenStudy (raffle_snaffle):

Those are the equations of the two lines.

OpenStudy (anonymous):

then the line is a measure in degrees?

OpenStudy (anonymous):

:( haha

OpenStudy (anonymous):

\[32 + 4x+7 + 11x - 9\] Solve for x - then plug x back into the triangle to find the angles

OpenStudy (anonymous):

WAIT

OpenStudy (anonymous):

30,15X

OpenStudy (anonymous):

wait, set that equation equal to 180

OpenStudy (anonymous):

OK

OpenStudy (anonymous):

if the sum of all the interrior angles of a triangle is 180 degrees, then 180 = angle A + angle B + angle C or 180 = 32 + (11x-9) + (4x + 7)

OpenStudy (anonymous):

10

OpenStudy (anonymous):

I forgot to type it in so 32 + 4x +7 +11x - 9 = 180

OpenStudy (anonymous):

X=10

OpenStudy (anonymous):

right - now plug 10 for x into (4x+7) and (11x-9) and you'll get the angel measures

OpenStudy (anonymous):

47,101

OpenStudy (anonymous):

Correct! Good job!

OpenStudy (anonymous):

so wat do i do after that

OpenStudy (mathstudent55):

Once you got x = 10, you only need to plug it into 11x - 9 to get 101 degrees, which you did correctly. That is the answer. m<CBA = 101 deg.

OpenStudy (anonymous):

thanks

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