Download PDF by Laurie Boswell, Holt Mcdougal: Algebra: Concepts and Skills

By Laurie Boswell, Holt Mcdougal

ISBN-10: 0618374205

ISBN-13: 9780618374205

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47–53 18 Chapter 1 23. 6 p 2p2 when p ϭ 5 24. 2g p 5 when g ϭ 4 25. 14(n ϩ 1) when n ϭ 2 x 26. ᎏᎏ ϩ 16 when x ϭ 14 7 NUMERICAL EXPRESSIONS Evaluate the expression. 27. 23 ϩ 5 Ϫ 2 28. 4 p 2 ϩ 15 Ϭ 3 29. 6 Ϭ 3 ϩ 2 p 7 30. 5 ϩ 8 p 2 Ϫ 4 31. 16 ϩ 8 p 22 32. 2 p 32 Ϫ 7 33. 10 Ϫ 3 ϩ (2 ϩ 5) 34. 7 ϩ 18 Ϫ (6 Ϫ 3) 35. [(7 p 4) ϩ 3] ϩ 15 Connections to Algebra Student Help HOMEWORK HELP NE ER T INT Extra help with problem solving in Exs. com EXPRESSIONS WITH FRACTION BARS Evaluate the expression. Then simplify the answer.

24 Ϫ 5 p 3 20. 62 ϩ 4 21. 43 ϩ 9 p 2 5 22. 3 p 2 ϩ ᎏᎏ 9 VARIABLE EXPRESSIONS Evaluate the expression for the given value of the variable. Student Help HOMEWORK HELP Example 1: Exs. 17–26 Example 2: Exs. 27–35 Example 3: Exs. 36–41 Example 4: Exs. 43–46 Example 5: Exs. 47–53 18 Chapter 1 23. 6 p 2p2 when p ϭ 5 24. 2g p 5 when g ϭ 4 25. 14(n ϩ 1) when n ϭ 2 x 26. ᎏᎏ ϩ 16 when x ϭ 14 7 NUMERICAL EXPRESSIONS Evaluate the expression. 27. 23 ϩ 5 Ϫ 2 28. 4 p 2 ϩ 15 Ϭ 3 29. 6 Ϭ 3 ϩ 2 p 7 30. 5 ϩ 8 p 2 Ϫ 4 31.

An expression by substituting numbers for variables and simplifying. The resulting number is called the ____ ? of the expression. Skill Check State the meaning of the variable expression and name the operation. 5 6. ᎏᎏ c 7. p Ϫ 4 8. 5 ϩ n 9. (8)(x) Evaluate the variable expression when k ‫ ؍‬3. 10. 11 ϩ k 11. k Ϫ 2 12. 7k k 13. ᎏᎏ 33 18 14. ᎏᎏ k 15. 18 p k Find the perimeter of each triangle. 16. a. b. 8 cm 6 cm 9 in. 10 cm 15 in. 12 in. Practice and Applications DESCRIBING EXPRESSIONS Match the variable expression with its meaning.

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Algebra: Concepts and Skills by Laurie Boswell, Holt Mcdougal


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