6. What expression is equivalent to: 54h
O 8x7x hc
O 2x4x-7xh
-9x7xh
09x6xh

Below

Step-by-step explanation:

9x6 hours (do we have to answer all that apply?)

∠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°