Simplify. Assume that no radicands were formed by raising negative quantities to even powers.
A. 
B. 
C. 
D. 
Answer: C
Mathematics
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Find the volume of the described solid.The base of a solid is the region between the curve y = 3cos x and the x-axis from x = 0 to x = ?/2. The cross sections perpendicular to the x-axis are isosceles right triangles with one leg on the base of the solid.
A. 
?
B. 
?
C. 
?
D. 2?
Mathematics
Find the unit vector in the same direction as the given vector.v = -2j
A. u = -j
B. u = 4j
C. u = - 
j
D. u = -2j
Mathematics
Subtract.
A. 111 B. 17 C. 7 D. 3
Mathematics
Write the repeating decimal using the bar over the repetend.0.777777777 . . .
A. 0.
B. 0.
C. 0.
D. 0.
Mathematics