Provide an appropriate response.
= 
.
A. 2n - m
B. 2m - 2n
C. 2m/n
D. 2m - n
Answer: D
Mathematics
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Use the Gauss-Jordan method to solve the system of equations. If the system has infinitely many solutions, let the last variable be the arbitrary variable.x - 8y + z = 23x - y + 2z = 6
A. 
B. 
C. ?
D. 
Mathematics
Find the equation in standard form of the parabola described.The vertex has coordinates (9, -3), and the focus has coordinates (9, -7).
A. (x - 9)2 = 16(y + 3) B. (y - 3)2 = -8(x + 9) C. (y - 3)2 = 8(x + 9) D. (x - 9)2 = -16(y + 3)
Mathematics
Prove the identity.
= 
What will be an ideal response?
Mathematics
Solve the system of equations by Gaussian elimination.
A. {(5, 2, 1)} B. {(1, 2, 5)} C. {(1, 5, 2)} D. ?
Mathematics