Help me please it’s homework

M. xyz =radians. covert this radian measure to its equivalent measure in degrees.

Find the maximum value of p= 4x + 5y subject to the following constraints :

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.