106 Foundations of Mathematical Theme: Civic Life Lesson 15, Part B, Proportion solutions In the previous activity, you began with a college logo that was 2.25" wide by 3.375" long and enlarged it so that the new length was 6 feet. You may have set up a proportion such as: Let x = width. 2.25 %3D 3.375 6. 1) Is the proportion below also a correct representation? If so, how would you solve it? 3.375 6. Credit: chromaco/Fotolia 2.25 Objectives for the lesson You will understand that: O Proportional relationships are based on a constant ratio. O Rules for solving equations can be applied to many types of equations in different forms. You will be able to: O Set up a proportion based on a contextual situation. O Solve a proportion using algebraic methods. Solve each equation. Round to the nearest tenth. 1245 12.7 0.2 2) 8,500 3) 4,200 5 Many small engines for saws, motorcycles, and utility tractors require a mixture of oil and 4) gas. If an engine requires 20 ounces of oil for 5 gallons of gas, how much oil would be needed for 8 gallons of gas? 5) Write your own problem, similar to question 4, about a situation that has meaning in your life. Your example should not use a unit rate (a comparison to 1 such as 35 miles per 1 gallon). Copyright © 2016, The Charles A. Dana Center at the University of Texas at Austin

Advanced Engineering Mathematics

10th Edition

ISBN:9780470458365

Author:Erwin Kreyszig

Publisher:Erwin Kreyszig

Chapter2: Second-order Linear Odes

Section: Chapter Questions

Problem 1RQ

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Transcribed Image Text:106 Foundations of Mathematical Theme: Civic Life Lesson 15, Part B, Proportion solutions In the previous activity, you began with a college logo that was 2.25" wide by 3.375" long and enlarged it so that the new length was 6 feet. You may have set up a proportion such as: Let x = width. 2.25 %3D 3.375 6. 1) Is the proportion below also a correct representation? If so, how would you solve it? 3.375 6. Credit: chromaco/Fotolia 2.25 Objectives for the lesson You will understand that: O Proportional relationships are based on a constant ratio. O Rules for solving equations can be applied to many types of equations in different forms. You will be able to: O Set up a proportion based on a contextual situation. O Solve a proportion using algebraic methods. Solve each equation. Round to the nearest tenth. 1245 12.7 0.2 2) 8,500 3) 4,200 5 Many small engines for saws, motorcycles, and utility tractors require a mixture of oil and 4) gas. If an engine requires 20 ounces of oil for 5 gallons of gas, how much oil would be needed for 8 gallons of gas? 5) Write your own problem, similar to question 4, about a situation that has meaning in your life. Your example should not use a unit rate (a comparison to 1 such as 35 miles per 1 gallon). Copyright © 2016, The Charles A. Dana Center at the University of Texas at Austin

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