Add or subtract as indicated and write the result in standard form. 5i - (-5 - i)
a. -5 + 4i
b. -5 - 6i
c. 5 + 6i
d. 5 - 4i

List the sides of δrst in in ascending order (shortest to longest) if: a ∠r =x+28°, m∠s = 2x+16°, and m∠t = x+12°

What are the solutions of the system? solve by graphing. y = -x^2 - 3x + 2 y = -2x + 2

In a two-digit number the units' digit is 7 more than the tens' digit. the number with digits reversed is three times as large as the sum of the original number and the two digits. find the number.