The barrels weighed 723 pounds a piece. the ship included 507 barrels. therefore, the barrels added how many pounds in weight to the ship’s cargo?

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?