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25-08-2019
Mathematics

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Can someone please help me on "Equation practice with angle addition"??

Can someone please help me on Equation practice with angle addition class=

Respuesta :

ayip4315 ayip4315

25-08-2019

Answer:

mAOB = 139 degrees

Step-by-step explanation:

1) By supplementary angles, you can set up the equation:

mAOB + mBOC = mAOC = 180

8x + 51 + (6x - 25) = 180

2) Solve for x:

14x + 26 = 180

14x = 154

x = 11

3) Substitute x into 8x + 51 to get mAOB:

8(11) + 51

=88 + 51

=139

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