Mathematics, 17.12.2020 23:40 WampWamp8751
There are 9 books stacked on a shelf. The thickness of each book is either 1 inch or 2 inches. The height of the stack of 9 books is 14 inches. Which system of equations can be used to determine x, the number of 1-inch-thick books in the stack, and y, the number of 2-inch-thick books?
A. x + y = 9
x + 2y = 14
B. x + y = 14
2x + y = 9
C. x + y = 14
x + 2y = 9
D. x + y = 9
2x + y = 14
Answers: 3
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There are 9 books stacked on a shelf. The thickness of each book is either 1 inch or 2 inches. The h...
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