List all the elements of B that belong to the given set.B = {20, 
, -20, 0, 
}Real numbers
A. 
B. {20, -20, 0}
C. 
D. 
Answer: A
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Calculate the surface area of the given surface.The surface f(x,y) = x2 + y2, -1 ? x, y ? 2. (Hint: Do the first integral by substitution or using a formula from the Table of Integrals. Use numerical integration to do the outer integral.)
A. 35.5222 B. 18.4734 C. 25.3332 D. 29.3516
Perform the indicated operations graphically.(4 + j) + (3 - 2j )
A. 
a = 4 - j
b = 3 - 2j
c = (4 - j) + (3 - 2j )
B. 
a = 4 + j
b = 3 - 2j
c = (4 + j) + (3 - 2j )
C. 
a = 4 + j
b = 3 - 2j
c = (4 + j) + (3 - 2j )
D. 
a = 4 + j
b = 3 - 2j
c = (4 + j) + (3 - 2j )
Find the most general antiderivative.
dx
A. 
e2x + 8e-x + C
B. 
e2x + 8e-x + C
C. 
e2x + 
e-x + C
D. 
e2x - 8e-x + C
Solve triangle ABC. If necessary, round the answer to the nearest tenth.B = 20.2°, C = 108.0°, b = 21.9 inches
A. A = 49.8°, a = 62.30 in., c = 51.80 in. B. A = 49.8°, a = 60.3 in., c = 49.8 in. C. A = 51.8°, a = 49.8 in., c = 60.3 in. D. A = 51.8°, a = 51.80 in., c = 62.30 in.