9.
1.1
At the arcade, Ryan, Sara, and Tim played video racing games, pinball, and
air...
Mathematics, 04.11.2020 19:00, cvhufjbvbcxx2406
9.
1.1
At the arcade, Ryan, Sara, and Tim played video racing games, pinball, and
air hockey. Ryan spent $6 for 6 racing games, 2 pinball games, and 1 game of
air hockey. Sara spent $12 for 3 racing games, 4 pinball games, and 5 games
of air hockey. Tim spent $12.25 for 2 racing games, 7 pinball games, and 4
games of air hockey. How much did each of the games cost?
Answers: 3
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”?
Answers: 1
Mathematics, 22.06.2019 03:00, thestarlexyp32wpj
The perimeter of ? cde is 55 cm. a rhombus dmfn is inscribed in this triangle so that vertices m, f, and n lie on the sides cd , ce , and de respectively. find cd and de if cf=8 cm and ef=12 cm. the answer is not cd=20 and de=15. i have tried that one, it does not work.
Answers: 3
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