Use Gaussian elimination and matrices to solve the system of linear equations. Write your final augmented matrix in triangular form and then solve for each variable using back substitution. 9x - y + 5z=106 2x - 6z=-26 8y + z= 15
A. (8, 1, 7)
B. (-8, 16, 1)
C. (8, 7, 1)
D. (-8, 1, 16)
Answer: A
Mathematics
You might also like to view...
Rewrite the fraction as a decimal number.
A. 0.813 B. 0.8125 C. 0.8225 D. 0.7125
Mathematics
Find an equation of the circle with the given center and radius.Center at (0, -5); radius = 4
A. (x - 5)2 + y2 = 16 B. (x + 5)2 + y2 = 16 C. x2 + (y - 5)2 = 4 D. x2 + (y + 5)2 = 16
Mathematics
Solve the system by substitution or elimination. If a system is inconsistent or has dependent equations, say so.4 x - y = 85x + y = 19
A. {(4, 3)} B. {(3, 4)} C. ?; inconsistent system D. {(3, 5)}
Mathematics
Solve the exponential equation using the method of "relating the bases" by first rewriting the equation in the form 
81x = 3
A. {27}
B. 
C. {4}
D. 
Mathematics