What is this? answer quickly please
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Mathematics, 21.06.2019 21:00
How many kilograms of a 5% salt solution and how many kilograms of a 15% salt solution must be mixed together to make 45kg of an 8% salt solution?
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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”?
Answers: 1
Mathematics, 21.06.2019 22:50
Jim had 15 minutes to do 5 laps around his school what would his time be
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Mathematics, 27.12.2019 22:31
Biology, 27.12.2019 22:31
Health, 27.12.2019 22:31
History, 27.12.2019 22:31
Social Studies, 27.12.2019 22:31
Social Studies, 27.12.2019 22:31
History, 27.12.2019 22:31
Biology, 27.12.2019 22:31
Mathematics, 27.12.2019 22:31
Mathematics, 27.12.2019 22:31
Biology, 27.12.2019 22:31