Solve.Scott set up a volleyball net in his backyard. One of the poles, which forms a right angle with the ground, is 6 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. To the nearest tenth of a foot, find the length of the rope.
A. 12.5 ft
B. 157 ft
C. 9.2 ft
D. 4.1 ft
Answer: A
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Solve the problem.Find the range and the standard deviation of the following voltages (in volts) of a sample of watch batteries: 1.212, 1.199, 1.201, 1.202, 1.199, 1.198.
A. Range = 0.014 V; standard deviation = 0.0040 V B. Range = 0.013 V; standard deviation = 0.0039 V C. Range = 0.013 V; standard deviation = 0.0040 V D. Range = 0.014 V; standard deviation = 0.0052 V
150 students in a math class take the final exam. The scores on the exam have an approximately normal distribution with mean ? = 65 and standard deviation ? = 10.Approximately how many students had test scores with standardized values between -0.675 and 1?
A. 37 B. 75 C. 140 D. 88 E. none of these
Graph the inequality.y ? 4x - x2
A.
B.
C.
D.
Multiply.-4 ? (-7)? 0 ? 3
A. 74 B. 0 C. -84 D. 84