Simplify complex numbers:add n subtract complex numbers

(6-9i) + (4+2i)

Sampson is a New Zealand exchange student in China, and he currently has 18,000 yuan in his bank account. If the exchange rate changes from 1 New Zealand dollar = 4.75 Chinese yuan to 1 New Zealand dollar = 4.

Which shows the expressions in the order they would appear on a number line from least to greatest? a. 17 over 9, square root of 6, square root of 15, square root of 30, 3 to the power of 3 b.

Estimate. then find the 4*979

Cassandra had a pair of mice. The female gave birth to eight pups, for male and four female. In the next term, the five female mice each gave birth to eight pups, again four male and four female.

Randy and Trey take turns cleaning offices on the weekends. It takes Randy at most 4 hours to clean the offices. It takes Trey at most 6 hours to clean the offices.

Screen printing a batch of shirts requires 0.39 minutes per shirt in addition to 5.84 minutes of initial setup time. If it takes 7.4 minutes to screen print a batch of shirts, how many shirts are in a batch

a box of pasta measures 8 in tall 2 1/2 in deep and 6in wide is the pasta fills 3/4 of the Box how many cubic inches does the pasta fill up

Twitter allows companies to reach consumers with

Y=4x, y=x+7, y=-2x+4, y=3x-1 which doesn't belong?

Consider a picnic. if you want to buy enough hot dogs and buns without having any left over, you need to balance the number of packages of buns (which usually contain 8 buns) with the number of packages of hot dogs (which usually contain 10 dogs).