Maimi's annual precipitation in 2000 was 61.05 in. albanys was 46.92 in. how much greater was miami's precipition than albany's?

Show me how you find the value of each variable and determine what the value of each variable is you i appreciate it : )

An advertising firm has an old computer that can prepare a whole mailing in 6 hours. with the of newer model the job is complete in 2 hours. how long would it take the newer model to do the job alone?

Parabolas y=−2x^2 and y=2x^2 +k intersect at points a and b that are in the third and the fourth quadrants respectively. find k if length of the segment ab is 5.