Solution to x-8 = 4x-12

x = 4/3

Step-by-step explanation:

Alright; begin by subtracting "x" on both sides. That gives you -8=3x-12. Next, add 12 to both sides which gives you 4=3x. Then divide 3 on both sides, giving you x=4/3.

∠acb = 8°

step-by-step explanation:

∠xba lies on the circle and is half the measure of the intercepted arc ax

hence

measure of arc ax = 2 × 42° = 84°

∠acb is outside the circle and is

∠acb = (arcab - arcax ), hence

∠acb = 0.5 (100 - 84) = 0.5 × 16° = 8°