A roller coaster car at an amusement park will seat 3 people. In how many different ways can Maryanne and Helen sit in the car, leaving one seat empty?

Suppose a ball is dropped fromca height of 6ft. it bounces back up but time it bounces, it reaches only 7/10 of its pervious height. what is the total of each height that the ball reaches after 5 bounces

Weekly wages at a certain factory are normally distributed with a mean of $400 and a standard deviation of $50. find the probability that a worker selected at random makes between $450 and $500

Evaluate 8j -k+148j−k+14 when j=0.25j=0.25 and k=1k=1.