Solve.The length and width of a rectangle have a sum of 90. What dimensions give the maximum area?
A. Length 44 and width 46
B. Length 36 and width 54
C. Length 45 and width 45
D. Length 35 and width 55
Answer: C
Mathematics
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Graph the system of linear inequalities.x - y ? -1x + 2y ? 5y ? 5
A. 
B. 
C. 
D. 
Mathematics
Use the discriminant to identify the graph of the non-degenerate conic as a parabola, an ellipse, or a hyperbola.2x2 + 5xy - 9y2 + 4x - 2y + 9 = 0
A. parabola B. hyperbola C. ellipse
Mathematics
Solve the system by elimination. x + 2y = 2-7x + 1y = -29
A. {(3, 0)} B. {(4, -1)} C. {(-4, 0)} D. ?
Mathematics
Find the unknown length in the right triangle. If necessary, round to the nearest tenth.
A. 9 mi B. 7 mi C. 5 mi D. 10 mi
Mathematics