An escalator in a department store is to carry people a vertical distance of 25 feet between floors. How long is the escalator if it makes an angle of 30° with the ground?
?
A. 42 feet
B. 31 feet
C. 41 feet
D. 50 feet
E. 39 feet
Answer: D
Mathematics
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x = -5
A. 123 B. -137 C. -77 D. 63
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Rationalize the denominator.
A. 
B. 
C. 
D. 
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Determine whether the basic feasible solution corresponding to the given tableau is optimal. x1 x2 x3 x4 x5 M
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Mathematics