Mr Bean

Answers Chapter 1 put to work 1A 1a 3 h ?7 2 b9 i 7 3 c1 j 20 3 d ?8 e 5 k b c a ?10 3 d ab e 7 2 f2 l g 14 5 bc e a f 5 3 2 a x = 8, y = ?2 1 c x = 7, y = 2 3 a x = 2, y = ?1 c m = 2, n = 3 e s = 2, t = 5 4 7 gx= ,y= 3 2 5 i x = ?1, y = 2 b x = ?1, y = 4 b x = 2.5, y = ?1 d x = 2, y = ?1 f x = 10, y = 13 h p = 1, q = ?1 2a a+b 3a 7 g 48 4a 4 3 5 a ?1 g 12 6a ?b a ab e b+a b a?b b5 h 3 2 b ?5 c ?3 i2 c2 6 c 5 i? d 14 j3 k7 14 3 l2 Exercise 1D 1 25, 113 2 22.5, 13.5 3 a $70 b $12 c $3 4 a $168 b $45 c $15 5 17 and 28 6 44 and 12 7 5 pizzas, 25 hamburgers 8 Started with 60 and 50; ?nished with 30 each 9 $17 000 10 great hundred shirts and three hundred ties 11 360 Outbacks and 300 Bush Walkers 12 Mydney = 2800; Selbourne = 3200 13 20 kg at $10, 40 kg at $11 and 40 kg at $12. b 18 h8 b e?d c 14 5 c g f a+b e 34 7 a ?18 d 28 b ?78.2 d 23 e0 f 10 12 7 j k 5 2 c b ?b d a c?a b?d bd ? c h a?c a c 16.

75 3 f 26 10 3 Exercise 1E d x ? 12 1 a x < 1 b x > 13 c x ?3 e x ? ?6 fx >3 g x > ?2 3 ix? h x ? ?8 2 2a x 1 6 0 1 2 3 4 e 12 h 0 1 2 3 4 2a t =a?b d i 0 1 2 3 ?1 3a x > b x ?5 2 20 5 87 , 6 pages 4 3x < 20, x < 3 Exercise 1F 1a e 2a d 3a d 4a c e 5a 6a c 7a b 8a c 9a c 10 a 11 a c 18 b9 c3 d ?18 3 f 81 g5 h 20 S = a + b + c b P = xy c C = 5p T = dp + cq e T = 60a + b 15 b 31.4 c 1000 12 e 314 f 720 F c ba= V = m p I w?H P= dr= rt C R(V ? 2) S ?lP fr= t= V Pr T = 48 b b = 8 c h = 3.82 d b = 10 (4a + 3w) m b (h + 2b) m d (4ah + 8ab + 6wb) m2 3w h m2 i T = 2 ( p + q) + 4h ii 88 + 112 A p = ?q h 2 bb=2 D= 3 60 d r = 4.8 n= 29 2D 1 b k = 1? D = bc (1 ? k ! 2 ) bc 2 ? 2 6 = k= 3 3 A + c2 P = 4b b A = 2bc ? c2 c b = 2c ?ay a2 ? a bx= b= b 2 x2 r = 3q ? p 2 x 2 d v = u2 1 ? 2 y cb ? a c?1 2 1 3a x < b x ? 148 3 2 ?7 22 dx? cx< 17 29 4 x = 2(z + 3t), ?10 d ? e2 1 5 a d = e2 + 2 f b f= c f= 2 2 ab a 2 + b2 + 2ab a + b 7 x= = 6 x= a?b?c ac + bc c Extended-response questions 1a c= ?10 9 b F = 86 ex= ?160 13 v...

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