A ladder 25 feet long is leaning against a wall. The bottom of the ladder is 4 feet from the base of the wall. How far up the wall is the top of the ladder

Afootball quarterback has two more chances to throw a touchdown before his team is forced to punt the ball. he misses the receiver on the first throw 25% of the time. when his first throw is incomplete, he misses the receiver on the second throw 15% of the time. what is the probability of not throwing the ball to a receiver on either throw?