?A polyhedron is semi-regular if which of the following is true?
A. ?All of its faces are different polygons
B. ?All of its faces are regular polygons, and all vertices are constructed with these same faces.
C. ?All of its faces are irregular polygons, and all vertices are constructed with these same faces.
D. ?Often called a Platonic Solid.
E. ?a and b are true.
Answer: B
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Using Green's Theorem, compute the counterclockwise circulation of F around the closed curve C.F = (-y - ey cos x)i + (y - ey sin x)j; C is the right lobe of the lemniscate r2 = cos 2? that lies in the first quadrant.
A. 0
B. 
C. 1
D. 
Perform the division.
A. x2 + 25 B. x2 - 25 C. x2 - 25x + 5 D. x2 + 5x + 5
The graph of a function f is given. Use the graph to answer the question.For what values of x is f(x) > 0?
A. (-3, ?) B. [-5, -3), (3.5, 5) C. (-3, 3.5) D. (-? -3)
Find the slope of the line that goes through the pair of points.(-5, -2) and (-5, -6)
A. 4 B. -4 C. Undefined D. 1