Given matrix A, find the indicated minor or cofactor.Find the cofactor A12.A = 
A. 19
B. -11
C. 11
D. 10
Answer: B
Mathematics
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Find the volume of the solid generated by revolving the region bounded by the given lines and curves about the 
. y = 
, y = 1, x = 0 to x = 
A. 
+ ?
B. 
- 
C. 
- 
D. 
- ?
Mathematics
Graph the pair of parametric equations with the aid of a graphing calculator.x = 5 cos t + cos 5t, y = 5 sin t - sin 5t, 0 ? t ? 2?
A. 
B. 
C. 
D. 
Mathematics
Solve the problem.If w = 4i - 4j - k, find a vector perpendicular to both w and j + k.
A. -4i + 8j + 4k B. -2i + 4j - 4k C. 4i - 4j - 3k D. -3i - 4j + 4k
Mathematics
Find the center and radius of the sphere.(x + 4)2 + (y + 5)2 + (z + 10)2 = 
A. C(-4, -5, -10), a = 
B. C(4, 5, 10), a = 
C. C(-4, -5, -10), a = 
D. C(4, 5, 10), a = 
Mathematics