2011-II-29
Ans: B
Note that the coordinates of $B$ are $(-3,-5)$. Since
… Read Note that the coordinates of $B$ are $(-3,-5)$. Since
HKCEE
2011-II-30
Ans: D
Let $(x,y)$ be the rectangular coordinates of $P$.
… Read Let $(x,y)$ be the rectangular coordinates of $P$.
$\
2011-II-31
Ans: D
Note that the slope of the straight line $x+3y-211=0$
… Read Note that the slope of the straight line $x+3y-211=0$
2011-II-32
Ans: D
Note that the slope of $ax+y=1$ is $-a$ and the slope of
… Read Note that the slope of $ax+y=1$ is $-a$ and the slope of
2011-II-33
Ans: A
The required probability
… Read The required probability
$\begin{array}{cl}
=
2011-II-34
Ans: B
Consider the mean of the weights of the seven boys, we h
… Read Consider the mean of the weights of the seven boys, we h
2011-II-35
Ans: D
… Read To draw a box-and-whisker diagram, we only consider t
2011-II-36
Ans: D
Consider the range, we have
… Read Consider the range, we have
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61 &
2011-II-37
Ans: D
Consider the general case $y=f(x+h)+k$.
… Read Consider the general case $y=f(x+h)+k$.
For $k$ is po
2011-II-38
Ans: B
Since $R$ is the $y$ intercept of the graph, then the $x
… Read Since $R$ is the $y$ intercept of the graph, then the $x
2011-II-39
Ans: C
Consider the option A,
… Read Consider the option A,
$\begin{array}{cl}
& \l
2011-II-40
Ans: D
Since $f(x)$ is divisible by $2x+1$, then by the facto
… Read Since $f(x)$ is divisible by $2x+1$, then by the facto
2011-II-41
Ans: A
$\begin{array}{cl}
& 1~000~010~000~101_2 \\
… Read $\begin{array}{cl}
& 1~000~010~000~101_2 \\
2011-II-42
Ans: A
Let $f(x,y)=2x-3y+35$.
… Read Let $f(x,y)=2x-3y+35$.
Note that the coordinates of
2011-II-43
Ans: B
Substitute $(0,0)$ into the left side of the equation
… Read Substitute $(0,0)$ into the left side of the equation
2011-II-44
Ans: C
Let $a$ and $d$ be the first term and the common differe
… Read Let $a$ and $d$ be the first term and the common differe
2011-II-45
Ans: C
Let $a$ and $r$ be the first term and the common ratio of
… Read Let $a$ and $r$ be the first term and the common ratio of
2011-II-46
Ans: D
Refer to the graph of $y=\cos x^\circ$, the given grap
… Read Refer to the graph of $y=\cos x^\circ$, the given grap
2011-II-47
Ans: A
By Heron’s formula, we have
… Read By Heron’s formula, we have
$\begin{array}{r
2011-II-48
Ans: D
Since $AE//BD$, then
… Read Since $AE//BD$, then
$\begin{array}{rcl}
\angle FA