Find the area of the specified region.Inside the circle r = a sin? and outside the cardioid r = a(1 - sin ?), a > 0
A. 
(4? - 3
)
B. 
(2? - 3
)
C. 
(6 - ?)
D. 
(3
- ?)
Answer: D
Mathematics
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Find a unit vector u in the direction of the given vector.
A. 
B. 
C. 
D. 
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Factor.36x2 - 84x + 49
A. (6x + 7)2 B. (6x - 7)2 C. (6x + 7)(6x - 7) D. Not possible
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Add or subtract. Express the answer as a mixed number.11
+ 11
A. 23
B. 21
C. 22
D. 11
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Simplify.
A. 
B. 6 - a2
C. 6
D. 
Mathematics