Tell me whether the expressions in each pair are i beg someone to answer this! 1. 6m+1 and 1x6+m 2. 9y and 9+y 3. mp+nq and mq+np 4. -(5-q) and 9-5 5. 8-4c and 4c-8 6. 3(5+z) and 15+2 pls put down your answer in form!

∠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°