Find all cube roots of the complex number. Leave answers in trigonometric form.4 - 4i
A. 
cis 100°, 
cis 220°, 
cis 340°
B. 
cis 60°, 
cis 180°, 
cis 300°
C. 
cis 80°, 
cis 200°, 
cis 320°
D. 
cis 100°, 
cis 220°, 
cis 340°
Answer: D
Mathematics
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Change the Cartesian integral to an equivalent polar integral, and then evaluate.
A. 
B. 
C. 
D. 
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What is the slope of the line through the points 
and 
?
?
A. 0.27 B. -0.75 C. 0.40 D. 0.75
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Use the summation properties and rules to evaluate the series. The following rules may be needed: 
.
A. - 21 B. 276 C. - 42 D. - 84
Mathematics
Solve the system of equations by substitution.
A. x = 3, y = 7.5; (3, 7.5) B. x = 7.5, y = 10.5; (7.5, 10.5) C. x = 7.5, y = -10.5; (7.5, -10.5) D. x = 3, y = -10.5; (3, -10.5)
Mathematics