Solve the application.Scott set up a volleyball net in his backyard. One of the poles, which forms a right angle with the ground, is 7 feet high. To secure the pole, he attached a rope from the top of the pole to a stake 11 feet from the bottom of the pole. Approximate the length of the rope to the nearest tenth of a foot, if necessary.
A. 13 ft.
B. 8.5 ft.
C. 170 ft.
D. 4.2 ft.
Answer: A
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A. -6, -30, -150, -750, -3750 B. -6, -30, -25, -20, -15 C. 0, 5, -30, -25, -20 D. -30, -150, -750, -3750, -18,750
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A. {6, -5}
B. {-5}
C. 
D. {6}