Solve by addition or substitution.9x + 7y = -364x - 2y = -16
A. (-4, 1)
B. (-5, 1)
C. (-4, 0)
D. ?
Answer: C
Mathematics
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Factor the expression completely, if possible.144 - x2y4
A. (12 + x2y2)(12 - x2y2) B. (12 + xy)(12 - xy) C. (12 + xy2)(12 - xy2) D. (12 - y)2
Mathematics
Solve the problem. Express your answer as an integer or simplified fraction.7x - (5x - 1) = 2
A. 
B. 
C. - 
D. - 
Mathematics
Use the graph to find the standard equation of the circle.
A. (x + 3)2 + y2 = 36 B. x2 + (y + 3)2 = 6 C. x2 + (y + 3)2 = 36 D. x2 + (y - 3)2 = 36
Mathematics
Solve the equation.5
- 6 = 3
A. 
B. 
C. 
D. 
Mathematics