Algebra success in 20 minutes a day by Barbara Jund PDF

By Barbara Jund

ISBN-10: 1576854868

ISBN-13: 9781576854860

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Is there a difference in coverage when you have a filling, root canal, or crown? If you don’t have dental insurance, call an insurance company and inquire about the different types of coverage. What would it cost you to have a cleaning and a root canal? Set up an equation using the information you obtain, and then solve it. 50 Team-LRN L E S S O N 7 Using Formulas to Solve Equations LESSON SUMMARY Formulas solve many real-life problems. In this lesson, you will find out what formulas are and how to use them to solve a variety of problems.

Let x = regularly priced merchandise. If you receive a discount of 20%, then you are paying 80% of the regular price. Solution: Subtract 14 from both sides of the equation. Simplify both sides of the equation. 80. Simplify both sides of the equation. 80 x = $40 2 21. Jack earns ᎏ3ᎏ as much as Jill. His yearly income is $38,000. How much does Jill earn? 1 22. You can save ᎏ5ᎏ the cost of a new washing machine by paying cash. The sale price of the washing machine 1 you plan to buy is $400. What is the regular price of the washing machine?

Then solve the equation for the variable you don’t know. Substitute what you know into the formula. Multiply 55 times 3. You would travel 165 miles. D = rt D = 55 · 3 D = 165 What if you wanted to know how long it would take to travel 300 miles if you were traveling at a speed of 60 mph? All you have to do is substitute what you know into the formula, and then solve for the variable you don’t know. 51 Team-LRN – USING FORMULAS TO SOLVE EQUATIONS – D = rt 300 = 60t 300 60t ᎏᎏ = ᎏᎏ 60 60 5=t Substitute what you know into the formula.

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Algebra success in 20 minutes a day by Barbara Jund


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