Which of the following statements are true? Select all that apply. A. x = y B. x + y = 180 C. y = z D. x + z = 180

If I am not mistaken the answer to your problem is B.) x+y=180

Step-by-step explanation:

∠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°