Solve the problem by integration.Find the root-mean-square of the voltage V = 430 sin 120?t (in V) for one period.
A. 215 V
B. 120 V
C. 304 V
D. 430 V
Answer: C
Mathematics
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Solve by completing the square.x2 + 14x + 13 = 0
A. -13, -1
B. ±
C. 1, 13
D. 26, -13
Mathematics
Change the Cartesian integral to an equivalent polar integral, and then evaluate.
A. 16807? B. 117649? C. 33614? D. 235298?
Mathematics
Solve the problem.Determine whether the ordered triple 
is a solution of the system of equations.9x + 6y + 9z = 56x + 3y - 3z = 14 x - y + 2z = -3
A. Yes B. No
Mathematics
Solve the equation.x2 + 4x + 8 = 0
A. {-2 - 2i, -2 + 2i}
B. {0, -4}
C. {2 - 2i, 2 + 2i}
D. 
Mathematics