2011 O水准 Mathematics Paper 2 参考答案

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呐一首歌

这个打不开啊

hongyionline

GC
8 minutes ago · Like

□石□头□

打不开

下雨天晴し

打不开呀~~~

烈帝～

应该是被banned了;P

milkytaste

Q1
(a) x=2
(b) 6/(y-2)
(c) 10x/(x-2)(2x+1)
(d) (2x-y)/x

Q2
(ai) 6.3 litres/100km
(aiia) 732km
(aiib) $16.24
(bi) $2400
(bii) $1187.69

Q3
(a) 20 sides
(bi) 54, 63, 126 (degree)
(bii) 49.5 cm^2

Q4
(d) 10.9cm

Q5
(ai) 105
(aii) 11th term
(bi) 2p+3
(biv) because the difference is 8(p+1)

Q6
(ai) 371m
(aii) 45300m^2
(aiii) 37.6 (degree)
(aiv) 232.4 (degree)
(b) 4.7 (degree)

Q7
(ai) 294ml
(aii) 30cm
(bii) 9680cm^2
(biii) 50.4cm

Q8
(ai) -4, 2 as a column vector
(aii) 4.47units
(aiii) -2, -1 as a column vector
(bia) b-a
(bib) 0.5a+0.5b
(bic) 3a- 1 1/2b
(bii) a+b
(biii) they are collinear, X is the midpt of OY

Q9
(a) -4.8
(c) -1, 1.3, 3.6
(d) 3.2
(eii) 2.92
(eiii) A= 10, B=-20

Q10
(ai) 21%
(aiia) 30.5 emails
(aiib) 13.1 emails
(biia) 0
(biib) 16/45
(biic) 1/5

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