Solve the problem.Two trains leave a train station at the same time. One travels east at 9 miles per hour. The other train travels west at 10 miles per hour. In how many hours will the two trains be 95 miles apart?

A. 5 hr
B. 10 hr
C. 5.5 hr
D. 2.5 hr


Answer: A

Mathematics

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Solve the problem.If a satellite reaches a speed of 7.91 kilometers per second, it will attain a circular orbit. If a satellite is placed in an orbit of 370 kilometers above the Earth, what is the equation of the path of the satellite if the origin is placed at the center of the Earth (the diameter of the Earth is approximately 12,740 kilometers)?

A. x2 + y2 = 136,900 B. x2 + y2 = 45,427,600 C. x2 + y2 = 171,872,100 D. x2 + y2 = 40,576,900

Mathematics

Use the compound interest formula A = P(1 + r)t and the given information to find the missing quantity.A = $7116.56P = $5000r = 4%t =   (Round to the nearest year.)

A. 9 yr B. 11 yr C. 10 yr D. 8 yr

Mathematics

Evaluate and simplify completely. Write your answer as a mixed number if possible. ÷ 4

A.
B.
C. 33
D.

Mathematics

Write out the first five terms of the sequence.an = 2n- 1

A. 1, 2, 3, 4, 5 B. 1, 3, 5, 7, 9 C. 3, 5, 7, 9, 11 D. -1, -3, -5, -7, -9

Mathematics