Find the standard deviation. Round to one more place than the data.15, 42, 53, 7, 9, 12, 14, 28, 47
A. 29.1
B. 17.8
C. 16.6
D. 15.8
Answer: B
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Solve the problem.Write the following as 5m for some whole number m: 255
A. 511 B. 58 C. 510 D. 57
Solve the problem. If necessary, round to the nearest tenth.The force acting on a pendulum to bring it to its perpendicular resting point is called the restoring force. The restoring force F, in Newtons, acting on a string pendulum is given by the formula F = mg sin ?where m is the mass in kilograms of the pendulum's bob, g ? 9.8 meters per second per second is the acceleration due to gravity, and ? is angle at which the pendulum is displaced from the perpendicular. What is the value of the restoring force when m = 0.5 kilogram and ? = 45°?
A. 3.4 N B. 4.2 N C. 3.5 N D. 3.3 N
Factor completely.6x3 - 6x
A. 6(x + 1)(x - 1) B. 6(x3 + 6x) C. 6x(x + 1)(x - 1) D. 6x(x + 1)2
Graph the system of inequalities.-x + 2y ? -63x + 2y > -18
A. 
B. 
C. 
D. 