By Michael Sullivan
Collage Algebra, 9/E
Michael Sullivan, Chicago kingdom University
ISBN-10: 0321716817 • ISBN-13: 9780321716811
©2012 • Pearson • textile, 840 pp
Published 01/04/2011 • Instock
Suggested retail cost: $206.00
Mike Sullivan’s time-tested technique focuses scholars at the primary talents they want for the direction: getting ready for sophistication, training with homework, and reviewing the options. within the 9th version, university Algebra has advanced to satisfy today’s path wishes, development on those hallmarks by way of integrating tasks and different interactive studying instruments to be used within the lecture room or online.
New Internet-based bankruptcy tasks follow talents to real-world difficulties and are followed by means of assignable MathXL routines to enable you comprise those tasks into the direction. moreover, quite a few new workout forms, exhibit Examples, and video tutorials for MathXL workouts provide teachers much more flexibility, whereas aiding scholars construct their conceptual figuring out.
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Additional info for College Algebra (9th Edition)
EXAMPLE 13 Distributive Property (a) 2 # 1x + 32 = 2 # x + 2 # 3 = 2x + 6 (b) 3x + 5x = 13 + 52x = 8x Use to remove parentheses. Use to combine two expressions. (c) 1x + 221x + 32 = x1x + 32 + 21x + 32 = 1x2 + 3x2 + 12x + 62 = x2 + (3x + 2x) + 6 = x2 + 5x + 6 Now Work PROBLEM ᭹ 87 The real numbers 0 and 1 have unique properties, called the identity properties. 1 Real Numbers 11 Identity Properties 0 + a = a + 0 = a a#1 = 1#a = a (4a) (4b) We call 0 the additive identity and 1 the multiplicative identity.
The product of 5 and 2 equals 10. 41. The sum of x and 2 is the product of 3 and 4. 42. The sum of 3 and y is the sum of 2 and 2. 43. The product of 3 and y is the sum of 1 and 2. 44. The product of 2 and x is the product of 4 and 6. 45. The difference x less 2 equals 6. 46. The difference 2 less y equals 6. 47. The quotient x divided by 2 is 6. 48. The quotient 2 divided by x is 6. In Problems 49–86, evaluate each expression. 49. 9 - 4 + 2 50. 6 - 4 + 3 51. -6 + 4 # 3 53. 4 + 5 - 8 54. 8 - 3 - 4 55.
What was his balance at the end of the month? In Problems 147 and 148, write an inequality using an absolute value to describe each statement. 147. x is at least 6 units from 4. 148. x is more than 5 units from 2. 149. S. Voltage In the United States, normal household voltage is 110 volts. It is acceptable for the actual voltage x to differ from normal by at most 5 volts. A formula that describes this is ƒ x - 110 ƒ … 5 (a) Show that a voltage of 108 volts is acceptable. (b) Show that a voltage of 104 volts is not acceptable.
College Algebra (9th Edition) by Michael Sullivan