Solve the system using the matrix inverse method.-4x + y - 3z - w = -4-x + 3y + z - 4w = -153x - 3y - 4z + w = 4-3x - y - z - 4w = -3
A. {(-1, 3, -1, -2)}
B. {(-1, -3, 1, 2)}
C. ?
D. {(1, -1, 3, 4)}
Answer: B
Mathematics
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Evaluate.
÷ 
A. 
B. 
C. 1
D. 
Mathematics
Divide.5.94y5 ÷ 2.7y
A. 2.2y4 B. 2.2y6 C. 2.2y5 D. 22y6
Mathematics
Solve the following system by any appropriate method. If there is no real number solution, so state.x2 + y2 = 9y = x - 3
A. (3, 0), (0, -3) B. (-3, 0), (3, 0), (0, -3), (0, 3) C. (-3, 0), (0, 3) D. no real solution
Mathematics
Decide whether the following is an expression or an equation. If it is an expression, simplify it. If it is an equation, solve it.
- 4 = 1
A. Equation; 12 - x B. Expression; -20 C. Equation; 20 D. Expression; -12
Mathematics