What is best definition of an exterior angle of a triangle

What is the solution set of the quadratic inequality x^2-5< or equal to 0

Gh bisects fgi. find the measure of hgi •15° •21° •10° •8°

Abag contains 3 red marbles, 2 blue marbles, and 2 green marbles. one marble is picked, then another marble. assume that the selections are made with replacement. a) find the probability of picking two red marbles with replacement. b) find the probability of picking a red marble and a blue marble. assume the selections are made without replacement. c) find the probability of picking two red marbles without replacement. d) find the probability of picking a red marble and a blue marble without replacement.