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3.4 Using Equations to Solve Problems

3.4 Using Equations to Solve Problems. Objective : To use the five-step plan to solve word problems. Warm – up : Six less than five times a number is 74. Find the number. Find four consecutive even integers whose sum is 100. 3.4 Using Equations to Solve Problems.

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3.4 Using Equations to Solve Problems

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  1. 3.4 Using Equations to Solve Problems • Objective: To use the five-step plan to solve word problems. • Warm – up: Six less than five times a number is 74. Find the number.Find four consecutive even integers whose sum is 100.

  2. 3.4 Using Equations to Solve Problems Plan for Solving a Word Problem Practice!! The longest side of a triangle is 3 more than twice the shortest side, and the remaining side is 2.4 cm. Find the lengths if the perimeter is 12 cm. • Step 1: Read the problem carefully • Step 2: Choose a variable and use it with the given facts to represent the unknowns • Step 3: Reread the problem and write an equation that represents the given situation • Step 4: Solve the equation to find the unknowns asked for • Step 5: Check your results and answer the problem (in a sentence!!)

  3. 3.4 Using Equations to Solve Problems • Larry’s Sandwich Shop sold 520 sandwiches yesterday. The number sold with lettuce and tomato was twice the number sold without. How many of each kind were sold? • Sally took a taxicab from her office to the airport. She had too pay a flat fee of $2.00 plus $0.75 per mile. The total cost was $6.50. How many miles was the taxi trip?

  4. 3.4 Using Equations to Solve Problems • The perimeter of a rectangle is 332 cm and the width is 76 cm. Find the rectangles length. • In any triangle, the sum of the measures of the angles is 180⁰. In triangle ∆ABC, <A is three times as large as <B and <B also 16⁰ larger than <C. Find the measure of each angle.

  5. 3.4 Using Equations to Solve Problems • Finish #8 – 10 on the Word Problem Worksheet from 3.4 (this will be turned in!) • Pg. 113 #2 – 10 even, 13, 17, 21

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