Solve the problem.A ship in the Pacific Ocean measures its position to be 20°33' north latitude. Another ship is reported to be due north of the first ship at 47°44' north latitude. Approximately how far apart are the two ships? Round to the nearest mile. Assume that the radius of the Earth is 3960 miles.
A. 1854 mi
B. 107,621 mi
C. 107,646 mi
D. 1879 mi
Answer: D
Mathematics
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Factor the polynomial completely.15x2 - 65x - 50
A. prime B. (15x + 10)(x - 5) C. 5(3x + 2)(x - 5) D. 5(3x - 2)(x + 5)
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Solve the system of equations.5x + 2y + z = -112x - 3y - z = 177x + y + 2z = -4
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Mathematics
Solve the problem.In a survey about the number of siblings of college students, the following probability table was constructed: 
What is the probability that a student has at most 2 siblings?
A. 0.25 B. 0.42 C. 0.75 D. 0.58
Mathematics