Which of the following is the conjugate of a complex number with –4 as the real part and 2i as the imaginary part?

2i – 4
2i + 4
–4 – 2i
4 – 2i

Gretchen is setting up for a banquet. she has 300 chairs and needs to distribute them evenly among t tables. how many chairs should she put at each table? write your answer as an expression.

The solution set for 5v2 – 125 = 0 is

Find the number of real number solutions for the equation. x2 + 5x + 7 = 0 0 cannot be determined 1 2