Please help me with #13 & #14 really struggling!
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Mathematics, 21.06.2019 17:00
The perimeter of a stage is 116 feet. it is 17 feet wide. how long is it?
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Mathematics, 21.06.2019 21:50
Scores on a university exam are normally distributed with a mean of 78 and a standard deviation of 8. the professor teaching the class declares that a score of 70 or higher is required for a grade of at least “c.” using the 68-95-99.7 rule, what percentage of students failed to earn a grade of at least “c”?
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Mathematics, 15.11.2020 21:50
Chemistry, 15.11.2020 21:50
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Mathematics, 15.11.2020 21:50
Mathematics, 15.11.2020 21:50
Mathematics, 15.11.2020 21:50