Graph the system of inequalities.y ? 2x - 4x + 2y ? 7x ? 1y ? -2
A. 
B. 
C. 
D. 
Answer: D
Mathematics
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Solve the systems of equtions using the addition method. 
A. no solution; ? B. {(2, 1)} C. {(3, 2)} D. {(-2, 0)}
Mathematics
Decide whether or not the ordered pair is a solution of the system.(9, -1);
A. No B. Yes
Mathematics
Solve the problem.How many cubes with 1-inch sides can be placed in a rectangular solid of length = 4 inches, 
and 
A. 20 B. 63 C. 36 D. 252
Mathematics
Solve the problem.A man 6 ft tall walks at a rate of 6 ft/sec away from a lamppost that is 12 ft high. At what rate is the length of his shadow changing when he is 35 ft away from the lamppost?
A. 1 ft/sec B. 35 ft/sec C. 2 ft/sec D. 6 ft/sec
Mathematics