Spike weighs twice as snowball. how much does spike weigh ?

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.