If a = - 4i and b = -4 – 4i, then find the value of the a+b in fully simplified form.

Which of the symbols correctly relates the two numbers below check all that apply 6? 6

How much dextrose 70% must be mixed with dextrose 5% to prepare 1,000 ml of dextrose 20%?

What will the graph look like for a system of equations that has no solution? a. the lines will be perpendicular. b. the lines will cross at one point. c. both equations will form the same line. d. the lines will be parallel.