How long must a ladder be to reach the top of a 12-foot wall if the both of the ladder is placed 3 feet from the base of the wall?
What is the unknown information that could be found using the Pythagorean theorem?
What is the approximate length of the ladder needed, rounding to the nearest hundredth

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.