Find all cube roots of the complex number. Leave answers in trigonometric form.-3
+ 3i
A. 
cis 50°, 
cis 170°, 
cis 290°
B. 
cis 70°, 
cis 190°, 
cis 310°
C. 
cis 70°, 
cis 190°, 
cis 310°
D. 
cis 50°, 
cis 170°, 
cis 270°
Answer: A
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Solve the problem.A 25-kg mass is attached to a spring that hangs vertically and is stretched 2 m from the equilibrium position of the spring. Assume a linear spring with F(x) = kx. How much work is required to compress the spring and lift the mass 1 m? Round to four decimal places when appropriate.
A. 183.75 J B. 275.625 J C. 30.625 J D. 428.75 J
Use the vectors v, u, w, and z to draw the indicated vector. 
v - w
A. 
B. 
C. 
D. 
Solve the problem.The spinner shown is spun once. Find the probability that the spinner stops on an odd number. 
A. 
B. 
C. 0
D. 1
Solve the system of equations using substitution.
A. x = 6 , y = -6; x = -5, y = 5
or (6, -6), (-5, 5)
B. x = -6 , y = - 
; x = 5, y = 
or 
, 
C. x = - 
, y = -6; x = 
, y = 5
or 
, 
D. x = 
, y = 5 or 