Which of the following is a solution of x^2 + 4x = −8? x = −2 − 2i x = 2 + 2i x = −4 + 4i x = 4 − 4i

What is the ratio for the surface areas of the cones shown below, given that they are similar and that the ratio of their radil and altitudes is 4: 3? 23

X2 + y 2 = 36 x + y = 6 solve the system of equations.

Aword processing program requires a 7- digit registration code made up of the digits 1,2,4,5,6,7 and 9 each number has to be used and no number can be used mor than once how many codes are possible