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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Evaluate the polynomial for the given value.4x2 - 6x - 7x = -5

A. 123 B. -137 C. -77 D. 63

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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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