Mathematics, 11.05.2021 18:40 tsumugiisama
A discount bookstore sells hardcover books for $12 and paperback books for $6. The number of hardcover books, x, sold one day was twice the number of paperback books, y, sold the same day. The total sales that day were $180.
Part 1) What is the system of equations that represents this situation?
Part2) What is the solution to the system and what does it represent in the context of this situation? Show your work.
Answers: 1
Mathematics, 21.06.2019 20:30, cogger9348
3.17 scores on stats final. below are final exam scores of 20 introductory statistics students. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 57, 66, 69, 71, 72, 73, 74, 77, 78, 78, 79, 79, 81, 81, 82, 83, 83, 88, 89, 94 (a) the mean score is 77.7 points. with a standard deviation of 8.44 points. use this information to determine if the scores approximately follow the 68-95-99.7% rule. (b) do these data appear to follow a normal distribution? explain your reasoning using the graphs provided below.
Answers: 1
Mathematics, 22.06.2019 03:00, slugmilk1090
The temperature of a chemical solution is originally 21 ? c . a chemist heats the solution at a constant rate, and the temperature of the solution 75 ? c after 1212 12 minutes of heating. the temperature, tt t , of the solution in ? c is a function of x , the heating time in minutes. write the function's formula.
Answers: 3
A discount bookstore sells hardcover books for $12 and paperback books for $6. The number of hardcov...
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