Find all cube roots of the complex number. Leave answers in trigonometric form.64 cis 120°
A. 4 cis 
°, 4 cis 
°, 4 cis 
°
B. 4 cis 40°, 4 cis 80°, 4 cis 120°
C. 4 cis 40°, 4 cis 160°, 4 cis 280°
D. 
cis 40°, 
cis 160°, 
cis 280°
Answer: C
Mathematics
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Write the sum without sigma notation and evaluate it.
A. -(1 - 3)2 -2(2 - 3)2 -3(3 - 3)2 = -6 B. (1 - 3)2 - (3 - 3)2 = -4 C. -(1 - 3)2 + (2 - 3)2 - (3 - 3)2 = 3 D. -(1 - 3)2 + (2 - 3)2 - (3 - 3)2 = -3
Mathematics
Perform the operation indicated.10
- 7
A. 2
B. 16
C. 17
D. 2
Mathematics
Write the augmented matrix for the system. 8x + 3y = 66 2x + 4y = 36
A. 
B. 
C. 
D. 
Mathematics
Factor.729y3 - 343
A. (9y + 7)(81y2 - 63y + 49) B. (9y - 7)(81y2 + 49) C. (9y - 7)(81y2 + 63y + 49) D. (729y - 7)(y2 + 63y + 49)
Mathematics