Evaluate 6 over 3 plus 7 and times 4

An assembly consists of two mechanical components. suppose that the probabilities that the first and second components meet specifications are 0.87 and 0.84. assume that the components are independent. determine the probability mass function of the number of components in the assembly that meet specifications. x

Tickets to a science exposition cost $5.75 each for studentd and $7.00 for adults.how many students and adults went if the ticket charge was $42.75

An elevator travels 310 feet in 10 seconds. at that speed, how far can't his elevator travel in 12 seconds?