Find all the complex roots. Leave your answers in polar form with the argument in degrees.The complex cube roots of -8i
A. 8(cos 90° + i sin 90°), 8(cos 210° + i sin 210°), 8(cos 330° + i sin 330°)
B. 512(cos 90° + i sin 90°), 512(cos 210° + i sin 210°), 512(cos 330° + i sin 330°)
C. 2(cos 90° + i sin 90°), 2(cos 210° + i sin 210°), 2(cos 330° + i sin 330°)
D. 2(cos 180° + i sin 180°), 2(cos 300° + i sin 300°), 2(cos 60° + i sin 60°)
Answer: C
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Plot the set of numbers on a number line.
A. 
B. 
C. 
D. 
Determine the number by which both sides of the equation must be multiplied or divided, as specified, to obtain just x on the left side.
x = 7; multiplied
A. 7
B. - 
C. 
D. 4
The graph of two equations along with the points of intersection are given. Substitute the points of intersection into the systems of equations. Are the points of intersection solutions to the system of equations (Y/N)?
x2 + y2 = 522y+3x = 0
A. No B. Yes
Solve the system using determinants.-4x - 9y - z = -93 x + 5y - 5z = 27-6x + y + z = 1
A. (2, -9, -4) B. (9, 4, 9) C. (2, 9, 4) D. (3, 7, 4)