Rationalize the denominator and simplify.
A. 128
B. 
C. 
D. 7
Answer: C
Mathematics
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Solve.Find the surface area of the cone frustum generated by revolving the line segment 
, 
, about the x-axis.
A. 
?
B. 
?
C. 
?
D. 
?
Mathematics
Solve.
= 
A. 1
B. 
C. 45
D. 
Mathematics
Identify the interval where f is increasing or decreasing, as indicated. Express your answer in interval notation.f(x) = -5x2 + 20x; increasing
A. (-?, 2] B. (-?, -2] C. [-2, ?) D. [2, ?)
Mathematics
Solve the problem in the right triangle ABC with the standard labeling.Find a if c = 0.0615 and ? = 54.1°
A. 0.0498 B. 35.9 C. 0.0361 D. 0.0615
Mathematics