Use the principle of square roots to solve the equation.x2 = 16
A. ±5
B. 8
C. 4
D. ±4
Answer: D
Mathematics
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Multiply.
(-9)
A. - 
B. - 
C. 
D. 
Mathematics
Find an equivalent equation in rectangular coordinates.r = 2(sin ? - cos ?)
A. x2 + y2 = 2y - 2x B. 2x2 + 2y2 = x - y C. 2x2 + 2y2 = y - x D. x2 + y2 = 2x - 2y
Mathematics
Divide.
A. 0 B. 1 C. -46 D. undefined
Mathematics
Use the Theorem of Pappus to find the volume of the solid obtained by revolving the region bounded by the graphs of 
and x = 4 about the y-axis.
a. 128? b. 512/3 ? c. 128/3 ? d. 32?
Mathematics