By Ron Larson

ISBN-10: 1305071735

ISBN-13: 9781305071735

ALGEBRA AND TRIGONOMETRY: actual arithmetic, genuine humans, seventh version, is a perfect pupil and teacher source for classes that require using a graphing calculator. the standard and volume of the workouts, mixed with fascinating functions and cutting edge assets, make instructing more uncomplicated and support scholars be successful. holding the sequence’ emphasis on scholar aid, chosen examples through the textual content contain notations directing scholars to past sections to check thoughts and abilities had to grasp the cloth to hand. The booklet additionally achieves accessibility via cautious writing and design—including examples with particular ideas that commence and finish at the comparable web page, which maximizes clarity. equally, side-by-side strategies convey algebraic, graphical, and numerical representations of the maths and aid various studying kinds. Reflecting its subtitle, this important revision focuses greater than ever on displaying scholars the relevance of arithmetic of their lives and destiny careers.

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X4͞3y2͞3 (xy)1͞3 Conclusions 128. 5−1͞2 ∙ 5x5͞2 (5x)3͞2 True or False? In Exercises 140–143, determine whether the statement is true or false. Justify your answer. (94 )−1͞2 1 −4͞3 − (125 ) 140. 131. (− 27 ) 132. Rewriting a Radical Expression In Exercises 133–136, write each expression as a single radical. Then simplify your answer. √√35 134. 4 2x √√ 135. √√243(x + 1) 136. 3 128a7b √√ 137. Economics The table shows the 2013 estimated populations and gross domestic products (GDP) for several countries, given in scientific notation.

2x − 5)4(3)(5x − 4)2(5) + (5x − 4)3(4)(2x − 5)3(2) 164. (x2 − 5)3(2)(4x + 3)(4) + (4x + 3)2(3)(x2 − 5)2(x2) 165. 4(2x + 3)2 − (4x − 1)(2)(2x + 3)(2) (2x + 3)4 166. 3(5x − 1)3 − (3x + 1)(3)(5x − 1)2(5) (5x − 1)6 x2 x2 x2 x2 + bx − 15 + bx − 12 + bx + 50 + bx + 24 Classifying an Expression In Exercises 171–174, find two integer values of c such that the trinomial can be factored. ) 171. x2 + x + c 173. 2x2 + 5x + c 172. x2 − 9x + c 174. 3x2 − 10x + c 175. Geometry The cylindrical shell shown in the figure has a volume of R V = πR2h − πr 2h.

C) Use the bar graph to make a statement about the total stopping distance required at increasing speeds. 250 Distance (in feet) 200 Geometric Modeling In Exercises 153 and 154, match the geometric factoring model with the correct factoring formula. For instance, the figure shown below is a factoring model for 2x2 + 3x + 1 = (2x + 1)(x + 1). x 1 x x x x 1 1 1 a b a a−b a b 125 100 b 75 x 20 30 40 60 50 Speed (in miles per hour) (a) a2 − b2 = (a + b)(a − b) (b) a2 − 2ab + b2 = (a − b)2 (c) a2 + 2ab + b2 = (a + b)2 154.

### Algebra and Trigonometry: Real Mathematics Real People by Ron Larson

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