Solve the system by graphing. If there is no solution or an infinite number of solutions, so state. Use set notation to express the solution set.
A. {(3, 4)}
B. {(-3, -4)}
C. {(-1, -2)}
D. {(-3, 4)}
Answer: D
Mathematics
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Find the derivative of the function at P0 in the direction of u.f(x, y, z) = 2xy3z2, P0(2, 8, 4), u = -2i + j - 2k
A. - 
B. - 20,480
C. - 16,384
D. - 
Mathematics
Find the root. Assume that variables represent nonnegative values.
A. a18b12 B. a2b3 C. a12b18 D. a3b2
Mathematics
Solve the problem.The following map shows the states Kentucky, Tennessee, Missouri, Iowa, and Nebraska. Find a route that starts and ends in Missouri and crosses each common state border exactly one time.
A. No such route exists. B. MO ? KY ? TN ? MO ? IA ? NE ? MO C. MO ? NE ? IA ? MO ? TN ? KY D. MO ? KY ? TN ? MO ? IA ? NE
Mathematics
Set up an integral for the length of the curve.y = 2 cot x, 
? x ? 
A. 
B. 
C. 
D. 
Mathematics