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14.12.2020 •
Mathematics
Suppose you bought supplies for a party from Party World. Three rolls of streamers and 15 party hats cost $30. Later, you bought 2 rolls of streamers and 4 party hats for $11.
a. Define your variables and create a system of equations to express the given information.
b. Solve your equations to: Calculate the cost of each roll of streamers and calculate the cost of each party hat.
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Ответ:
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