8) a 10-foot ladder leans
against a wall. the foot of
the ladder is 3 feet from
the base of the wall. what
angle does the ladder
make with the ground?

The hawaiian alphabet has 12 letters. how many permutations are posible for each number of letters?

Arestaurant chef made 1 1/2 jars of pasta sauce. each serving of pasta requires 1/2 of a jar of sauce. how many servings of pasta will the chef be able to prepare using the sauce?

Monitors manufactured by tsi electronics have life spans that have a normal distribution with a standard deviation of 1800 hours and a mean life span of 20,000 hours. if a monitor is selected at random, find the probability that the life span of the monitor will be more than 17,659 hours. round your answer to four decimal places.