Graph the region indicated by graphing the system of inequalities. Label all points of intersection.
A. O(0, 0), A(0, -8)
B. O(0, 0), A(0, -8)
C. O(0, 0), A(0, -8)
D. O(0, 0), A(0, -8)
Answer: D
Mathematics
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Solve the problem.Find the center of mass of a tetrahedron of density 
bounded by the coordinate planes and the plane 
.
A. 
= 
, 
= 
, 
= 
B. 
= 
, 
= 
, 
= 
C. 
= 
, 
= 
, 
= 
D. 
= 
, 
= 
, 
= 
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Rewrite the expression as a single trigonometric function using a double-angle identity.1 - 2 sin22?
A. cos 4?
B. 
sin 16?
C. 2 sin 4?
D. cos 8?
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Express the product as a sum containing only sines or cosines.cos(3?) cos(6?)
A. 
[cos(9?) - sin(3?)]
B. 
[cos(3?) + cos(9?)]
C. 
[cos(9?) - cos(3?)]
D. cos2(12?2)
Mathematics
Divide and, if possible, simplify. Assume all variables represent positive numbers.
A. 3fg
B. 
C. 3
D. 3
Mathematics