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math word problem

Alice has measured the hemoglobin levels of 200 people. If the data follows a normal distribution with a mean of 10 and a standard deviation of 1, what can you conclude?   one of these...

ratio problem

The ratio of the number of adults to the number of students at the school dance has to be 1:10. Last year there were 477 more students than adults at the dance. If the school is expecting the same...

Physical Science

A tugboat pushes into a barge, exerting 8,000 N of force.  The area of contact between the tugboat and the barge is 1.850 m2.  What is the total pressure that the area of contact experiences...

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