Square roots of -1 + 2i√2​

At the beginning of the day, stock xyz opened at $6.12. at the end of the day, it closed at $6.88. what is the rate of change of stock xyz? a. 1.17% b. 11.0% c. 12.4% d. 81.5%

Cd is the perpendicular bisector of both xy and st, and cy=20. find xy.

D. in a discrete probability distribution, the sum of the probabilities for the discrete variables will be > 1. true or false