Subtract in the indicated base.247eight - 153eight
A. 76eight
B. 53eight
C. 74eight
D. 94eight
Answer: C
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Solve the problem.The intensity L(x) of light x ft beneath the surface of a lake satisfies the differential equation 
. At what depth, to the nearest foot, is the intensity one tenth the intensity at the surface?
A. 86 ft B. 29 ft C. 58 ft D. 38 ft
Solve the problem.A physical fitness association is including the mile run in its secondary-school fitness test. The time for this event for boys in secondary school is known to possess a normal distribution with a mean of 470 seconds and a standard deviation of 50 seconds. Find the probability that a randomly selected boy in secondary school will take longer than 355 seconds to run the mile.
A. 0.4893 B. 0.5107 C. 0.9893 D. 0.0107
Use scientific notation to solve the problem.If the speed of light is 3.00 x 108 m/sec, how long does it take light to travel 2.29 x 1011 m, the distance from the sun to Mars?
A. 7.6 x 102 sec B. 7.6 x 102 min C. 76 sec D. 7.6 x 103 sec
Sketch the graph of the function over the interval 0 ? x ? 2?.y = -2 sin 
A. 
B. 
C. 
D. 