Let u = (1, 2 -2), v= (2, 1, 3) and w = j + 4k. a) find cos theta, where theta is the angle in degrees between u and w.

Tom is the deli manager at a grocery store. he needs to schedule employee to staff the deli department for no more that 260 person-hours per week. tom has one part-time employee who works 20 person-hours per week. each full-time employee works 40 person-hours per week. write and inequality to determine n, the number of full-time employees tom may schedule, so that his employees work on more than 260 person-hours per week. graph the solution set to this inequality.

21 a stick 7 inches long is broken into two pieces, so that one piece is twice as long as the other one. how long are the two pieces?

Siri can type 90 words in 40 minutes about how many words would you expect her to type in 10 minutes at this rate