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AnSWErS to tHE StudEnt'S Book ExErCiSES - Hodder Plus Home

AnSWErS to tHE StudEnt'S Book ExErCiSES - Hodder Plus Home

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14 a) 120 cm 3 b) 216 cm 315 a) £45 b) 43 milesExercise 22.2 (page 296)1 a) b 5 a 1 cb) x 5 ______ 4a 2 ywc) t 5 _____ v 2 uad) t 5 _____ p 2 c3e) q 5 _______ A 2 pr or q 5 __ Ap p 2 rf) g 5 ______p 1 2f2g) n 5 _______ Ft 2 m42 u 5 ____ sbn3v3 h 5 ___ 2ab4 R 5 _____ 100IPT5 a) h 5 ___ 3Vb) 16.6 cmpr 26 a) 140°Fb) C 5 (F 1 40) 3 5_9 2 40___7 r 5 √___ 3Vph8 a) a 5 _______ v2 2 u 2b) u 5 √ ________v2s2 2 2asExercise 22.3 (page 298)1 x 5 1.72 a) 2 3 2 5 3 2 5 223 3 2 5 3 3 5 12b) x 5 2.83 a) 4 3 2 4 5 605 3 2 5 5 120b) x 5 4.64 a) 3.7 3 2 3.7 5 47.03.8 3 2 3.8 5 51.1b) x 5 3.775 x 5 2.36 x 5 4.337 228 31.69 a) x 2 1 x 5 10 b) 2.7 (or 23.7)10 a) x(x 2 4) 5 621, i.e. x 2 2 4x 5 621b) 27, 23 (or 227, 223)11 7.8Mixed exercise 22 (page 300)1 a) 104°F b) 32°F c) 23°F2 95p3 a) 12 cm 2 b) 21.6 cm 24 a) 34 minutes b) 47.8 minutes5 a) q 5 p 2 2r b) r 5 _____ x 2 s5c) r 5 ___ mspqd) y 5 ______ tx 2 A or y 5 __ x2t 2 2 __ A2t6 a) w 5 _______ T 2 40 b) w 5 2.4 kg457 a) 4 cm b) 8 cm8 a) 30 words b) 60 words9 a) 1 3 1 4 3 1 5 52 3 1 4 3 2 5 16b) x 5 1.710 a) 3 3 2 3 2 5 184 3 2 4 2 5 48b) x 5 3.411 a) x 3 1 x 5 100b) x 5 4.6Chapter 23Exercise 23.1 (page 303)1 r 5 _____ pq2 P 5s 1 t4y 1 153 x 5 ________3(1 1 y)5 r 5 _______ pq 1 pq 2 12s7 t 5 ______2u 1 asv9 u 5 _____v 2 s5g 2 3e11 f 5 _______2100A _________RT 1 1004 p 5 ______ rq 2 rq 1 16 x 5qy______q 1 pb 1 a8 x 5 _______3a 2 2bfu10 v 5 _____u 2 fc(5a 1 1)12 b 5 _________15a 2 2Exercise 23.2 (page 304)1 a) x 5 6 √ ___________ y 1 4b) l 5 ____ gt234p 2c) h 5 6 √ _____________(pr) A 2 2 r 2 d) u 5 6 √ ________v 2 2 2ase) r 5 6 √ ______ 3Vf) t 5 6ph√ ______________ 30 2 2sa___2 a) 9000 cm 3 b) r 5 √___ Vphc) 5.64 cm3 a) 5.39 b) 3.68 mc) x 5 √ ___________d 2 2 y 2 2 z 2 d) 0.71 mMixed exercise 23 (page 305)1 a) a 5 _____ 2rbb) g 5 ____ 4lp2r 2 1t 2c) u 5_____fvv 2 fe) a 5 ______ 2 1 b2b 2 1g) a 5 _____ 2bcb 1 11i) x 5 ______y 2 2 1d) x 5 b 2 ac ______c 2 1f) y 5 2xh) x 5 6 √ ____y3j) n 5 __________ p 2 2r 2 2p 2 2216Answers <strong>to</strong> the Student’s <strong>Book</strong> exercisesHigher WJEC GCSE Mathematics © 2010, <strong>Hodder</strong> Education

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