By Mary Jane Sterling
From signed numbers to tale difficulties — calculate equations with easePractice is the major to enhancing your algebra abilities, and that is what this workbook is all approximately. This hands-on consultant specializes in aiding you remedy the numerous forms of algebra difficulties you will stumble upon in a targeted, step by step demeanour. With barely enough refresher reasons prior to each one set of difficulties, this workbook indicates you the way to paintings with fractions, exponents, factoring, linear and quadratic equations, inequalities, graphs, and more!100s of problems!Hundreds of perform routines and worthy explanationsExplanations replicate educating tools and lecture room protocolsFocused, modular content material provided in step by step lessonsPractice on countless numbers of Algebra I problemsReview key suggestions and formulasGet whole resolution motives for all difficulties
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Additional info for Algebra I Workbook for Dummies, 2nd Edition (For Dummies (Math & Science))
Finally, cross-multiply to get your answer: Q. If Agnes can type 60 words per minute, then how long will it take her to type a manuscript containing 4,020 words (if she can keep typing at the same rate)? A. 67 minutes (1 hour and 7 minutes). Set up a proportion with words in the two numerators and the corresponding number of minutes in the denominators: Divide both numerators by 60 and then cross-multiply to solve for x. Chapter 3: Making Fractions and Decimals Behave 9. Solve for x: Solve It 11.
Chapter 3: Making Fractions and Decimals Behave 9. Solve for x: Solve It 11. Solve for x: Solve It 13. A recipe calls for 2 teaspoons of cinnamon and 4 cups of flour. You need to increase the flour to 6 cups. To keep the ingredients proportional, how many teaspoons of cinnamon should you use? Solve It 10. Solve for x: Solve It 12. Solve for x: Solve It 14. A factory produces two faulty iPods for every 500 iPods it produces. How many faulty iPods would you expect to find in a shipment of 1,250? Solve It 31 32 Part I: Getting Down to the Nitty-Gritty on Basic Operations Finding Common Denominators Before you can add or subtract fractions, you need to find a common denominator for them.
What is the least common denominator for the fractions and A. 120. The fractions and have denominators with a greatest common factor of 4. So multiplying the two denominators together gives you 480, and then dividing 480 by that common factor gives you 480 ÷ 4 = 120. The least common denominator is 120. and 15. Rewrite the fractions and common denominator. with a Solve It 17. Rewrite the fractions common denominator. Solve It 16. Rewrite the fractions common denominator. and with a and with a Solve It and with a 18.