Find the area of the specified region.Shared by the circles r = 2 and r = 4 cos ?
A. 
(4? - 3
)
B. 
?
C. 
(2? + 3
)
D. 2?
Answer: A
Mathematics
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Find div F.F(x, y, z) = 2xyzi + 8yzj + 6zk
A. yz + z + 1 B. 2yz + 8z + 6 C. 2yzi + 8zj + 6k D. yz + z
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Find the expected value.Four cards are numbered 1 through 4. Two of these cards are chosen at random without replacement and the numbers on them are multiplied. Find the expected value of this product.
A. 
B. 4
C. 6
D. 
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Write the first five terms of the arithmetic sequence with the given values.a1 = 21, d = -5
A. 0, 21, 16, 11, 6 B. 25, 19, 13, 7, 1 C. 21, 16, 11, 6, 1 D. -21, -16, -11, -6, -1
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Find the coordinates of the vertex of the parabola.y = -2x2 + 16x - 37
A. (5, -4) B. (4, -5) C. (-5, 4) D. (-4, 5)
Mathematics