Abag contains 3 blue marbles, 5 red marbles, and 4 green marbles. you choose one without looking. what is the probability that it is red or green

1) in triangle the, what is the measure of angle t (in degrees)? 2) in triangle bat, the measure of angle b is 66∘, and the measure of angle t is 77∘.what is the measure of the exterior angle at a (in degrees)?