For a saturday matinee, adult tickets cost $7.50 and kids under 12 pay
only $5.00. if 70 tickets are sold for a total of $450, how many of the
tickets were adult tickets and how many were sold to kids under 12?

True or false look at the picture pls : /

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.

Aladder that is 20 ft. long against the side of a building. f the angle formed between the ladder and the ground is 75 degrees, how far is the bottom of the ladder from the base of the building?