prove that for any natural value of n the value of the expression (n+2)^2-(n-2)^2 is a multiple of 8.

What additional information could be used to prove abc =mqr using sas? check all that apply.

Graph the equationy= x+3[tex]y = x + 3[/tex]

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.