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Marcella bought summer dresses (x) and sandals (y) for $110. Her receipt says she bought seven pieces of merchandise altogether. If each dress (x) costs $20, and each pair of sandals (y) costs $10, which system of equations represents the purchase? How many dresses (x) and pairs of sandals (y) did Marcella buy?
Marcella bought summer dresses (x) and sandals (y) for $110. Her receipt says she bought seven pieces of merchandise altogether. If each dress (x) costs $20, and each pair of sandals (y) costs $10, 20x+10y=110, x + y = 7 represents the purchase. 3 dresses (x) and pairs of sandals (y) did Marcella buy. Solution 20(7 y)+10y=110 140 - 20y + 10y = 110 -10y = 110 - 140 y = - 30/-10 y = 3
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Asked 3/3/2023 9:29:03 PM
Updated 119 days ago|12/18/2023 12:29:19 AM
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Marcella bought summer dresses (x) and sandals (y) for $110. Her receipt says she bought seven pieces of merchandise altogether. If each dress (x) costs $20, and each pair of sandals (y) costs $10, 20x+10y=110, x + y = 7 represents the purchase. 3 dresses (x) and pairs of sandals (y) did Marcella buy.
Solution
20(7 y)+10y=110
140 - 20y + 10y = 110
-10y = 110 - 140
y = - 30/-10
y = 3
Added 119 days ago|12/18/2023 12:29:19 AM
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