SolvE using Ratios and Proportions

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SolvE using Ratios and Proportions 4/22/2019 11:21 AM 3.6: Solve using Ratios and Proportions

3.6: Solve using Ratios and Proportions Review Prove that 4/22/2019 11:21 AM 3.6: Solve using Ratios and Proportions 2

Steps using Cross Products If the question is written as a fraction, think of “cross-multiply butterfly” Simplify the equation Solve Check 4/22/2019 11:21 AM 3.6: Solve using Ratios and Proportions

3.6: Solve using Ratios and Proportions Example 1 Solve x = 20 4/22/2019 11:21 AM 3.6: Solve using Ratios and Proportions 4

3.6: Solve using Ratios and Proportions Example 2 Solve x = –1 4/22/2019 11:21 AM 3.6: Solve using Ratios and Proportions 5

3.6: Solve using Ratios and Proportions Example 3 Solve x = 18 4/22/2019 11:21 AM 3.6: Solve using Ratios and Proportions 6

3.6: Solve using Ratios and Proportions Your Turn Solve x = 30 4/22/2019 11:21 AM 3.6: Solve using Ratios and Proportions 7

3.6: Solve using Ratios and Proportions Problem Solving Steps Write the proportion by rewriting it this way: Simplify Solve and label Check 4/22/2019 11:21 AM 3.6: Solve using Ratios and Proportions

3.6: Solve using Ratios and Proportions Example 4 Each day, the seals at an aquarium are each fed 8 pounds of food for every 100 pounds of their body weight. A sea at the aquarium weighs 280 pounds. How much food should the seal be fed per day? 4/22/2019 11:21 AM 3.6: Solve using Ratios and Proportions 9

3.6: Solve using Ratios and Proportions Your Turn Little Suzy is making her own potting soil. For every 4 buckets of moss, she mixes in 3 buckets of fertilizer. Suppose she uses 10 buckets of moss, how many buckets of fertilizer will she use? 4/22/2019 11:21 AM 3.6: Solve using Ratios and Proportions 10

3.6: Solve using Ratios and Proportions Assignment Page 171 4-30 even, 34, 39 4/22/2019 11:21 AM 3.6: Solve using Ratios and Proportions 11