Solve the system of equations. 3x - 4y = -3 6x + 2z = - 
2y - 4z = 4
A. No solution
B. 
C. 
D. 
Answer: C
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Solve the problem.Find the work done by a force of 10i (newtons) in moving an object along a line from the origin to the point 
(distance in meters).
A. 50.00 joules B. 64.03 joules C. 44.61 joules D. 12.81 joules
Solve the problem.Suppose that the data set {x1,x2, x3, ...,xN} has average A and standard deviation s. If A' and s' are the average and standard deviation of the data set 
respectively, then
A. A' = A + c and s' = s. B. A' = A and s' = s. C. A' = A + c and s' = s + c. D. A' = A and s' = s + c. E. none of these
A point on the terminal side of angle ? is given. Find the exact value of the indicated trigonometric function of ?.(21, 28) Find cos ?.
A. 
B. 
C. 
D. 
Solve the equation.x(5x + 10) = 0
A. 
B. {0, -2}
C. {0, 2}
D. 