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Mathematics, 16.04.2020 23:46 rostecorralmart
Which is most likely to be an observational study? a. The relationship between hours of exercise and sleep. b. Students feelings about after-school track practice. c. The difference in minutes a day exercising between boys and girls. d. The types of exercise students engage in after school.
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Tom can paint the fence in 12 hours, but if he works together with a friend they can finish the job in 8 hours. how long would it take for his friend to paint this fence alone?
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