In a scientific study there are 9 guinea pigs, 6 of which are pregnant. If 3 are selected at random without replacement, what is the probability that all three are pregnant.

∠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 would be 198 people.

hope it