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

Question

asked Jan 10, 2020 137k views

1 Answer

Anshu · Answer 1 · 2020-01-14T15:17:18+0000

Answer:

mAOB = 139 degrees

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