Billy works at a toy store. he put 1,573 new toys on a shelf. at the end of the day customers bought 862 of those toys. how many new toys does billy have left ?

Simply 8x squared + 5(7x squared- x) - 2x =

Is a positive integer raised to a negative power always positive

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.