Two cars are 750 miles apart. car a is traveling towards car b at 70 miles per hour, at the same time car b is traveling towards car a at 80 miles per hour. how long would it take the two cars to reach one another? a)4 hrs b)5 hrs c)7.5 hrs d)10 hrs

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.