Find the probability to the nearest hundredth that the value of the random variable is within one standard deviation of the mean.f(x) = 
x; [0, 2]
A. 0.63
B. 0.50
C. 0.75
D. 0.69
Answer: A
Mathematics
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Any non-zero number divided by zero is ____.
A. infinity B. undefined C. zero
Mathematics
Solve the problem.The diagram below shows a rope connecting the top of a pole to the ground. The rope is 20 yd long and touches the ground 15 yd from the pole. How tall is the pole? Round approximations to the nearest tenth. 
15 yd
A. 17.5 yd B. 6.6 yd C. 13.2 yd D. 87.5 yd
Mathematics
Solve the system. If the system has infinitely many solutions, write the solution set with x arbitrary. 5x - y + z = 8 7x + y + z = 612x + 2z = 14
A. {(x, -x - 1, -6x + 7)} B. {(x, -x + 1, 6x + 7)} C. {(x, -x + 1, -6x + 7)} D. {(x, -x + 1, 6x - 7)}
Mathematics
Solve the equation.-0.66(5000) + 0.8x = 0.07(5000 + x)
A. 4900 B. 2500 C. 5100 D. 5000
Mathematics