Solve using the addition principle.15 = b + 7
A. 8
B. -22
C. 22
D. -8
Answer: A
Mathematics
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Simplify.7(
) + 
(
)
A. 22
B. 230
C. 
D. 
Mathematics
Graph the equation using the indicated viewing window.2x + 3y = 6;X min = -10X max = 10X scl = 2Y min = -8Y max = 8Y scl = 2
A. 
B. 
C. 
D. 
Mathematics
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)
Mathematics
Solve the system of equations using matrices (row operations). If the system has no solution, say that it is inconsistent.
A. x = 2, y = 3, z = -7; (2, 3, -7)
B. x = 1, y = -3, z = -16; (1, -3, -16)
C. x = 5, y = 
, z = -3; 
D. x = 1, y = 3, z = -4; (1, 3, -4)
Mathematics