Find the perimeter P of ▱JKLM
with vertices J(−4,2), K(1,2), L(2,−2), and M(−3,−2). Round your answer to the nearest tenth, if necessary.

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.