anonymous
  • anonymous
You are buying decorations for a birthday party. Six rolls of crepe paper and 20 balloons cost $11.90. After you start decorating, you need more supplies. You buy 2 more rolls of crepe paper and 15 more balloons for $6.05. How much did each roll of crepe paper cost? A) $1.15 B) $ 1.58 C) 25¢ D) 22.6¢
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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schrodinger
  • schrodinger
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Hero
  • Hero
Hint: 6c + 20b = 11.90 2c + 15b = 6.05
anonymous
  • anonymous
What am I supposed to do with the two equations?
Hero
  • Hero
Apply systems of equations

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anonymous
  • anonymous
What is that?
Hero
  • Hero
6c + 20b = 11.90 2c + 15b = 6.05 c = (11.90 - 20b)/6 c = (6.05 - 15b)/2 c = c 2(11.90 - 20b = 6(6.05 - 15b) 23.80 - 40b = 36.30 - 90b 90b - 40b = 36.30 - 23.80 50b = 12.50 b = 12.50/50 b = .25 c = 1.15 So the crept paper cost $1.15
anonymous
  • anonymous
Thank you is what you just did a system of equations?

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