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Published byAdele Barber Modified over 8 years ago

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Algebra 1 Notes 3.6 Warm Up 1. 3. 2.4.

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Vocabulary 3.6 Ratio: Comparison of two numbers by division. Can be expressed 3 ways. Proportion: Equation stating two ratios are equal. Solve by cross products.

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Example 1 Determine whether the ratios 4 and 24 5 30 form a proportion.

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Example 2 Solve the proportion n 24 15 16 =

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Example 3 Trent goes on a 30 mile bike ride every Saturday. He rides the distance in 4 hours. At this rate, how far can he ride in 6 hours?

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Example 4 The scale for the map of Connecticut is 5 inches = 41 miles. The distance between two cities is 2 ½ inches. What is the distance in miles?

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Example 5 Solve the proportion: 4 14 9 x + 3 =

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Example 6 Solve the proportion: 5 10 -2 x - 5 =

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