Use the two-stage method to solve.Find x1 ? 0, x2 ? 0, x3 ? 0 such that x1 + x2 + x3 ? 125 x1 + x2 + x3 ? 75and z = 2x1 + 5x2 + 3x3 is maximized.
A. x2 = 100, x3 = 25, x1 = 0, z = 575
B. x1 = 125, x2 = 0, x3 = 0, z = 250
C. x1 = 0, x2 = 0, x3 = 125, z = 375
D. x2 = 125, x1 = 0, x3 = 0, z = 625
Answer: D
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A. B = 64.7°; a = 0.6 m; c = 3.9 m B. B = 64.7°; a = 3.9 m; c = 5.3 m C. B = 64.7°; a = 1.7 m; c = 4.0 m D. B = 64.7°; a = 0.6 m; c = 3.6 m
Simplify the complex fraction.
A. 7 - a2
B. 7
C. 
D. 
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What will be an ideal response?