Solve the system of equations using matrices.5x - y - 6z = -94x + 9z = 69 7y + z = 68
A. (6, 5, 9)
B. (6, 9, 5)
C. (-6, 9, 12)
D. (-6, 5, 9)
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 closed counterclockwise path around the rectangle with vertices at 
and 
A. 73 B. 48 C. 55 D. 0
Write the linear system corresponding to the reduced augmented matrix.
A. x1 = -4, x2 = t + 6, x3 = t for any real number t B. No Solution C. x1 = 4, x2 = -t + 6, x3 = t for any real number t D. x1 = 4, x2 = t + 6, x3 = 0
Find the numbers at which f is continuous. At which numbers is f discontinuous?f(x) = 4 tan x
A. continuous for all real numbers except x = 
where k is an odd integer
B. continuous for all real numbers except x = 
where k is an odd integer
C. continuous for all real numbers
D. continuous for all real numbers except x = 0
Solve the system. 2x + z = -11 w + x + 6y - z = 182w + y + 6z = -20 w + x + 3y = 7
A. (4, -3, 2, -5) B. (4, -3, 6, -5) C. (8, -6, 6, -10) D. (4, -6, 4, -10)