Use Gaussian elimination to solve the system of equations.2x + 2y + z = 74x - 4y - z = -252x + y + 4z = 19
A. (-2, 5, 3)
B. (-2, 3, 5)
C. No solution
D. (5, 3, -2)
Answer: B
Mathematics
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A. The set of all points inside the sphere x2 + y2 + z2 = 64. B. The set of all points outside the sphere x2 + y2 + z2 = 64. C. The set of all points on and inside the sphere x2 + y2 + z2 = 64. D. The set of all points on and outside the sphere x2 + y2 + z2 = 64.
Mathematics
Graph the integrand and use geometry to evaluate the integral.
A. 18 B. 324 C. 54 D. 162
Mathematics
The graph of a function is given. Choose the answer that represents the graph of its derivative.
A. 
B. 
C. 
D. 
Mathematics
Solve the quadratic equation by any method.2x2 + 4x = - 1
A. -4
B. 2, 4
C. 
D. -2, 0
Mathematics