Find the volume of the solid generated by revolving the region about the y-axis.The region enclosed by x = 
, x = 0, y = - 5, y = 5
A. 25?
B. 1250?
C. 
?
D. 50?
Answer: D
Mathematics
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Find the focus and directrix of the parabola.x2 + 8y = 0
A. (0, -2); y = 2 B. (0, -2); y = -2 C. (0, -2); x = 2 D. (-2, 0); y = 2
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Match the differential equation with the appropriate direction field.y'(x) = x2 - y2
A. 
B. 
C. 
D. 
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Use an identity to write the expression as a single trigonometric function or as a single number.
A. cos 37° B. cot 37° C. tan 37° D. sin 37°
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Graph the complex number.-5 - i
A. 
B. 
C. 
D. 
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