Determine the real solutions to the system of nonlinear equations.xy - x2 = -20x - 2y = 3
A. (-5, -1), 
B. (5, 1), 
C. (5, 1), 
D. (-5, -1), 
Answer: C
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Find the Jacobian for the given transformation.
A. 24u2 B. 24v2 C. 12v2 D. 12u2
Solve the problem. Round your answer, if appropriate.An inverted conical water tank with a height of 12 ft and a radius of 3 ft is drained through a hole in the vertex. If the water level drops at a rate of 1 ft/min, at what rate is water (in ft3/min) draining from the tank when the water depth is 8 ft? (Hint: Use similar triangles.)
A. 
? ft3/min
B. 4? ft3/min
C. 6? ft3/min
D. 
? ft3/min
Which of the following conditions DOES NOT increase the bargaining power of buyers?
A. Buyers purchase a relatively large portion of the selling firm's output B. Buyers can switch to another product with no switching costs C. Buyers pose a credible threat to pursue backward vertical integration D. Buyers purchase a relatively small amount of the selling firm's output
Use the law of cosines to find a true statement from the list below, if 
.
?
A. 
B. ?
C. ?
D. ?
E. ?