This is right ? ? for 19- i did 5/11 in decimal is 0.4545 that’s correct? for 20- 6/10 ? for 21- 4/11? for 22- 10/15? it is correct

The graph of a hyperbola is shown. what are the coordinates of a vertex of the hyperbola? (0, −4) (−3, 0) (0, 0) (0, 5)

Including 6% sales tax, an inn charges $135.68 per night. find the inns nightly cost

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.