Solve the system of equations using Gaussian elimination or Gauss-Jordan elimination.-2x - 2y - 5z = -21-8x - 7y - 19z = -8-4x - 3y - 9z = -6
A. 
B. 
C. 
D. No solution
Answer: D
Mathematics
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A. (-38) + (-22) B. (-38) + (+22) C. (-38) - (-22) D. None of the above
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Find the sum.11 + (-14)
A. 3 B. 25 C. -25 D. -3
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Find the general form of the equation of the plane with the given characteristics. The plane passes through the points (5, 5, -2) and (4, 2, 1) and is perpendicular to the plane -3x- 2y + 4z = 1.
A. 6x + 5y + 7z - 41 = 0 B. 3x + 2y- 4z + 33 = 0 C. 6x- 5y + 7z - 9 = 0 D. 3x + 2y- 4z = 0 E. 7x + 6y + 5z - 55 = 0
Mathematics
Let f be a scalar field. Determine whether the expression is meaningful. If so, state whether the expression represents a scalar field or a vector field.
?(gradf)
Mathematics