Mathematics, 21.10.2020 01:01 corbinfisher

What’s a better buy? 80 marbles for $4.99 or 90 marbles for $5.99?

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Mathematics, 21.06.2019 17:00, aminamuhammad11

Suppose i flip two identical coins. what is the probability that i get one head and one tail?

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Mathematics, 21.06.2019 17:00, chrisraptorofficial

Ben is three times as old as samantha, who is two years older than half of michel's age. if michel is 12. how old is ben?

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Mathematics, 21.06.2019 18:00, dlaskey646

The swimming pool is open when the high temperature is higher than 20∘c. lainey tried to swim on monday and thursday (which was 3 days later). the pool was open on monday, but it was closed on thursday. the high temperature was 30∘c on monday, but decreased at a constant rate in the next 3 days. write an inequality to determine the rate of temperature decrease in degrees celsius per day, d, from monday to thursday.

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Mathematics, 21.06.2019 21:50, zymikaa00

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”?