hey i believe that your answer is A. without having to do the math if you look at it you can tell that its bigger then options B and C so those are not it. and it is to small to be D. so with that said your answer is A have a nice dy and good luck!
This is the exterior angle theorem meaning the two angles in the triangle is equal to the outer angle of the angle. So you would set your equation to (3x+4) + 58 = 12+8x
Solve for x then plug the x back into the 12+8x equation to get your angle
belt is 0.86 less than jacket b=j-0.86 add 0.86 to both sides b+0.86=j sub b+b+0.86=82.78 2b+0.86=82.78 minus 0.86 from both sides 2b=81.92 divid both sides by 2 b=40.96
