Evaluate the improper integral.
A. 240
B. 32
C. 20
D. 160
Answer: D
Mathematics
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Factor out the trinomial.
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?
A. 
B. 
C. 
D. 
E. 
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Plot the parametric surface over the indicated domain.r(u, v) = 3cos vi + 4sin vj + uk; -7 ? u ? 7, 0 ? v ? 2?
A. 
B. 
C. 
D. 
Mathematics
Solve the system by the substitution method. Be sure to check all proposed solutions.x + 4y = 78y = 6x + 7
A. {(-2, -5)} B. {(1, 13)} C. {(3, 25)} D. {(2, 19)}
Mathematics
A. 1
B. 2
C. 1
D. 0
Mathematics