Write the augmented matrix for the system of linear equations.
A. 
?
B.
?
C.
?
D.
?
E.
Answer: B
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Calculate the flux of the field F across the closed plane curve C.F = xi + yj; the curve C is the counterclockwise path around the circle x2 + y2 = 121
A. 484? B. 242? C. 0 D. 22?
Determine the real solutions to the system of nonlinear equations.x2 + y2 = 41x - y = 1
A. (4, -5), (5, -4) B. (-4, -5), (5, 4) C. (4, 5), (5, 4) D. (-4, 5), (-5, 4)
Use a graphing calculator to determine which expression completes the identity.The expression 
is to be the left hand side of an equation that is an identity. Which one of the following four expressions can be used as the right hand side of the equation to complete the identity?
A. cos x + 1 B. tan x - sec x C. cot x + sin2x D. sin x + cos x
Solve the system by the addition method.4y = 4 - 6x2x = 28 - 4y
A. {(-6, 10)} B. {(6, -10)} C. {(4, -10)} D. ?