You need 4 1/8 yards of blue silk to make one bridesmaids dress and 3 5/8 yards of the same fabric to make another. How many yards of blue silk do you need to make both dresses?

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?