Find the center and radius of the circle.x2 + y2 - 8x + 16y = -31
A. (-8, 4), r = 7
B. (8, -4), r = 49
C. (4, -8), r = 7
D. (-4, 8), r = 49
Answer: C
Mathematics
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In the given voting system, the weights represent, in order, voters A, B, C, and so on. Determine the Banzhaf power index for each voter.[16 : 1, 5, 7, 9]
A. A and B have an index of 0. C and D have an index of 
.
B. A has an index of 0. All others have an index of 
.
C. All have an index of 
.
D. A has an index of 
. All others have an index of 0.
Mathematics
Find the derivative.g(x) = 2x2e-x
A. 4xe-x(1 - x) B. 2xex(2 - x) C. 2xe-x(2 - x) D. 2xe-x(x + 2)
Mathematics
Evaluate the improper integral or state that it is divergent.
A. Divergent B. 0 C. 10 D. 20
Mathematics
Find the area.Find the area under the curve y = 
bounded on the left by x = 24.
A. 
B. 
C. 
D. 10
Mathematics