Find 
. Write the answer in polar form with the argument between 0° and 360°z1 = 10(cos 45° + i sin 45°), z2 = 5(cos 15° + i sin 15°)
A. 
(cos 45° + i sin 45°)
B. 2(cos 30° + i sin 30°)
C. 2(cos 45° + i sin 45°)
D. 
(cos 30° + i sin 30°)
Answer: B
Mathematics
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+ 
A. 
B. 
C. 
D. 
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Parametrize the surface S.S is the portion of the sphere x2 + y2 + z2 = 81 between z = - 
and z = 
.
What will be an ideal response?
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Find the slope of the line.Determine the slope of the line through the points (-9, -4), (8, 7)
A. - 
B. 
C. 
D. - 5
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Write sigma notation.5 + 8 + 11 + 14 + 17
A. 
B. 
C. 
D. 
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