ALGEBRA 1 LESSON 1-6 Multiplying and Dividing Real Numbers –15 2.– – –2 7.–120 8.–105 9.– – – – –8 18.– –8 23.– –64 26.– a. –24°F b.–75°F c.–51°F d.–31.5°F 32.– – –81 37.– – –2 41.– –11 pages 41–44 Exercises –2 47.–8 48.–1 49.–7 50.– –

ALGEBRA 1 LESSON 1-6 Multiplying and Dividing Real Numbers – 58.– – 61.– 62.– – – – a. i. 2 ii. –6 iii. 24 iv. –120 b.pos. c.neg. d.No; answers may vary. Sample: The sign of the product is not affected by the number of pos. factors, only by the number of neg. factors. 71.a. When a and b are both neg. or both pos. b.When a is neg. and b is pos., or when a is pos. and b is neg. 72.–1 73.– – 76.–6 77.–4 78.–

ALGEBRA 1 LESSON –84. Answers may vary. Samples are given. 80.ac + b 81.b – a + c 82.ab – c 83.–ab + c 84.–bc + a 85.31¢ 86.Yes; whatever the signs of a and b, | ab |, | a |, and | b | are pos., and | ab | = | a | | b |. 87.a.4, –8, 16, –32 9, –27, 81, –243 b.Pos.; the expression will involve an even number of neg. factors. c.Neg.; the expression will involve an odd number of neg. factors is the multiplicative inverse of 10 because 0.1(10) = 1. (–10 is the opposite of 10.) 89.The opposite of a nonzero number n is –n while the multiplicative inverse is. 1n1n [–12 –2 ] –15 21 –9 – –12 8 – – – –8– – Multiplying and Dividing Real Numbers

ALGEBRA 1 LESSON 1-6 Multiplying and Dividing Real Numbers a. 139 ft; 91 ft b.Less than 4 s; for t = 4, h = 155 – 16t 2 = –101, so h = 0 for some value less than 4 (about 3.1). 97.a. a = 5000 – 25t b ft c ft 98.–23°C 99.– – – 104.–8 105., or – 107.– A 110.F 111.C 112.H 113.B –2 115.– $