1. Holt CA Course 2 1-1 Evaluating Algebraic Expressions Preview 5-1 RatiosRatios 5-2 Rates and Unit RatesRates and Unit Rates 5-3 ProportionsProportions 5-4 Dimensional AnalysisDimensional Analysis 5-5 Similar FiguresSimilar Figures 5-6 Indirect MeasurementIndirect Measurement 5-7 Scale Drawings and Scale ModelsScale Drawings and Scale Models Warm Ups

2. Holt CA Course 2 1-1 Evaluating Algebraic Expressions 5-1 Ratios Warm Up Write each fraction in lowest terms. 14 16 1. 9 72 3. 24 64 2. 45 120 4. 7878 3838 1818 3838

3. Holt CA Course 2 1-1 Evaluating Algebraic Expressions Warm Up Divide. Round answers to the nearest tenth. 1. 2. 3. 4. 23.3 3.5 23.8 23.9 420 18 73 21 380 16 430 18 5-2 Rates and Unit Rates

4. Holt CA Course 2 1-1 Evaluating Algebraic Expressions Warm Up Find two ratios that are equivalent to each given ratio. 3535 1. 45 30 3. 90 60 3232, 10 12 2. 20 24 5656, 8989 4. 24 27 16 18, 9 15 6 10, Possible answers: 5-3 Proportions

5. Holt CA Course 2 1-1 Evaluating Algebraic Expressions Warm Up Find each unit rate. 1. jump rope 192 times in 6 minutes 2. four pounds of bananas for $2.36 3. 16 anchor bolts for $18.56 4. 288 movies on 9 shelves 32 jumps/min $0.59/lb $1.16/bolt 32 movies/shelf 5-4 Dimensional Analysis

6. Holt CA Course 2 1-1 Evaluating Algebraic Expressions Warm Up Solve each proportion. b 30 3939 = 1. 56 35 y5y5 = 2. 4 12 p9p9 = 3. 56 m 28 26 = 4. b = 10y = 8 p = 3 m = 52 5-5 Similar Figures

7. Holt CA Course 2 1-1 Evaluating Algebraic Expressions Warm Up Solve each proportion. x 75 3535 = 1. 2.4 8 6x6x = 2. x6x6 9 27 = 3. 8787 x 3.5 = 4. x = 45x = 20 x = 2 x = 4 5-6 Indirect Measurement

8. Holt CA Course 2 1-1 Evaluating Algebraic Expressions Warm Up Evaluate the following for x = 16. 1. 3x2. x Evaluate the following for x =. 3. 10x4. x 4812 4 3 4 2 5 1 4 1 10 5-7 Scale Drawings and Scale Models