1.) Determine whether the given expressions are polynomials or not. (Please give a 'yes' or 'no' answer.)
a)
-4ab divided by 9
Yes or no
b) 7x4y2 - 5
Yes or no
c) 4 divided by 5x - x3y4
Yes or no
d) 3a-366
Yes or no

∠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°

i dont know what you want me to answer for this but im guessing 2: 11?