Ten times a number, x, is one-half the sum of the number and three. Which answer represents this situation?

This represents the situation : 10x = (1/2)(x + 3)

10x = 1/2x + 3/2

9.5x = 1.5

This is the answer : x = 3/19

∠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°