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Bell Ringer

Bell Ringer. Solve the following proportions x/5 = 9/45 3/4 = x/44 12/x = 48/60 On a scale of 1-10, 1 being I have learned nothing and 10 being I have learned a lot, rate how much you have learned this year and explain why. Objective. I can…… Set up and Solve proportions.

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Bell Ringer

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  1. Bell Ringer Solve the following proportions x/5 = 9/45 3/4 = x/44 12/x = 48/60 On a scale of 1-10, 1 being I have learned nothing and 10 being I have learned a lot, rate how much you have learned this year and explain why.

  2. Objective • I can…… Set up and Solve proportions

  3. Essential questions • What does proportional mean? • How can we use proportions in everyday life?

  4. Review • How do we solve proportions? • 4 = 24 • X 42 • Cross multiply divide

  5. Practice • 10 = 40 • 12 x • 7 = 49 • X 70 • 7 = 28 • X = 40

  6. Using Proportions in everyday life • Sales tax 10.25% • How much tax do you pay on a pair of shoes that cost 59.99? • X = sales tax • X = 10.25 • 59.99 100 • 10.25x59.99=614.89 • 614.89 ÷ 100 = $6.15

  7. Proportions sales tax • Calculate the sales tax of each of the following items. 10.25% Hat 33.99 Jacket 99.99 Jeans 44.50

  8. PERCENT OFF • If an hat cost 33.99 but its 20% off, how much do you pay? • X = 80 • 33.99 100 • 80 x 33.99 = 2719.2 • 2719.2 ÷ 100 = $27.19

  9. Percent off • Computer cost 399.99. You Get 15% off, how much do you pay? • X = 85 • 399.99 100 • 85x399.99= 33999.15 • 33999.15 ÷100=$ 339.99

  10. White board practice • Regular price $64.99 • You get 10% off, how much do you pay? • $58.49

  11. White board practice • Regular price $119.99 • You get 25% off, how much do you pay? • $89.99

  12. White board practice • Regular price $225.50 • You pay 10.25% sales tax, how much do you pay? • $248.61

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