Iwould appreciate any on this one.

B is correct.

Step-by-step explanation:

Use the quadratic formula to figure this out. In order to use the quadratic formula, figure out the quadratic equation.

I hope you get what I mean. :) Look at the attached images (2nd image: top is q equation and bottom is q formula)

:)

∠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°

it is b)

hope this : )

step-by-step explanation: