Write the complex number in rectangular form.4(cos (-135°) + i sin (-135°))
A. -
- 
i
B. -2
+ 2
i
C. -2
- 2
i
D. -
+ 
i
Answer: C
Mathematics
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Find the volume of the described solid.The solid lies between planes perpendicular to the x-axis at x = - 6 and x = 6. The cross sections perpendicular to the x-axis are semicircles whose diameters run from 
to 
A. 288? B. 576? C. 144? D. 72?
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Find a general expression for the slope of a tangent line to the indicated curve.y = 5x4 - 6x3 - 9
A. 20x3 - 18x2 B. 20x4 - 18x3 - 9 C. 4x3 - 6x2 D. 20x3 - 18x2 - 9
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Find the range for the data set.5, 19, 5, 19, 5, 19, 5, 19
A. 12 B. 14 C. 19 D. 24
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