Solve.The weight of an object on the Earth's surface is inversely proportional to the square of its distance from the center of the Earth. An object weighs 1100 pounds on the Earth's surface. This is approximately 4000 miles from the center of the Earth. How much would this object weigh 4800 miles from the center of the Earth? (Round to the nearest tenth of a pound.)
A. 1584 pounds
B. 763.9 pounds
C. 1004.2 pounds
D. 916.7 pounds
Answer: B
Mathematics
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A. cos2x B. sin2x + 1 C. -sin2x D. cos2x + 1
Mathematics
Solve the problem.Thompson's Hardware spent $15,670 this year on advertising alone. If total sales were $790,100, what percent of total sales was spent on advertising? Round to the nearest tenth of a percent, if necessary.
A. 504% B. 0.2% C. 50.4% D. 2%
Mathematics
Provide an appropriate response.The probability distribution for the random variable X is: 
What is the expected value of X?
A. 0.62 B. 0.26 C. 0.22 D. 0.50
Mathematics