Atrain leaves little rock, arkansas, and travels north at 85 kilometers per hour. another train leaves at the same time and travels south at 80 kilometers per hour. how long will it take before they are 660 kilometers apart?

Do 12/14 and 8/10 have the same value? explain your answer.

Consider a cube that has sides of length l. now consider putting the largest sphere you can inside this cube without any point on the sphere lying outside of the cube. the volume ratio -volume of the sphere/ volume of the cube is 1. 5.2 × 10−1 2. 3.8 × 10−1 3. 1.9 4. 2.5 × 10−1 5. 3.8

About 9% of th population is hopelessly romantic. if 2 people are randomly selected from the population, what is the probability that at least 1 person is hopelessly romantic?