HKCEE - 2008

2008-I-01

Ans: $ab^3$
$\begin{array}{cl}
& \dfrac{(ab)^3}{a

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2008

2008-I-02

Ans: (a) $x\ge \dfrac{35}{4}$ (b) $9$

$\begin{array}{rcl

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2008

2008-I-03

Ans: (a) $1$ and $3$ (b) $2$ and $3$

Note that $n$ is a positive

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2008

2008-I-04

Ans: $220^\circ$
Note that $\angle PRQ=90^\circ$, then we

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2008

2008-I-05

Ans: $\dfrac{1}{3}$
The required probability

$\begin{ar

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2008

2008-I-06

Ans: (a) $t=\dfrac{5s}{2}$ (b) $s=274$, $t=685$

$\begin{

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2008

2008-I-07

Ans: (a) $\$97$ (b) Yes

The estimated total amount
$\begin{

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2008

2008-I-08

Ans: (a) $450$ (b) (i) $80\%$ (ii) $80$

The number of girls in

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2008

2008-I-09

Ans: $x=33^\circ$, $y=76^\circ$, $z=28^\circ$
Since $AB

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2008

2008-I-10

Ans: (a) $a=4$, $b=21$, $c=3$ (b) Mean $=3.276\text{ kg}$,

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2008

2008-I-11

Ans: (a) $b=2$, $3$ and $-5$ (b) $k-16$ (c) $y=-16$

Substitu

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2008

2008-I-12

Ans: (a) $B=(-3,4)$, $C=(4,-3)$ (b) No (c) $x-y-7=0$, $(10

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2008

2008-I-13

Ans: (a) Base radius $=12\text{ cm}$, height$=16\text{ cm

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2008

2008-I-14

Ans: (a) (i) $\dfrac{3}{5}$ (ii) (1) $\dfrac{4}{21}$ (2) $

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2008

2008-I-15

Ans: (a) $148\text{ m}$ (b) (i) $37.8^\circ$ (ii) $\angle A

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2008

2008-I-16

Ans: (a) $a=3$, $b=17$ (b) (i) $\$0.2P$ (ii) $\$1\ 347\ 000$

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2008

2008-I-17

Ans: (b) (i) $x^2+y^2+16x+128y-5120=0$ (ii) $(-8,81)$ (i

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2008

2008-II-01

Ans: B
$\begin{array}{cl}
& \left(\dfrac{1}{2}\ri

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2008

2008-II-02

Ans: A
$\begin{array}{rcl}
m & = & 7 – 3n \\

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2008

2008-II-03

Ans: A
$\begin{array}{rcl}
\dfrac{-k}{1-k} – \dfr

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2008