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孔週雙品科育教偶理—耳三第張四第

日二初月五年甲歷

ITY WAH KIU YAT PO

華僑教育

香港英文中學會考試題解答

初級數學

(核完)

A melons are 63 ner 1b. and plans are

$1.50 per 15 Ans.

ABCD 1-a pärallelogram.

DC ia preduced to N us that

DC-CN. Prove D

that'

(3) AM AN

(b) AB and CD are two equal chords of the

circle with centre 0. If AB and CD are produced to meet at På prove that) PO bisects APC.

Section B

50

(a)

(b)

日一十月六年四六九一般公年三十五國民豪中

Solution.

(a)

7 bin 59° 30).

ein 24. RT

iNa

Log.

17

0.8451

#in58 307 coaec24 28"

11.9363

0.3828 (+ 1.1632.

(b)

'antilor .14.56.

*= 3 #in63 cm.3(0,8910)=2,8730 cm2 3.- 5,11027” cm -5(0,4540)-2_2700 «m.(»

EF #4 9430 aMA

Draw the graphs of sym3x + 12 and 6y -78 -9%. fron X and to 1 = 6...

(For the z-axis sue the moale F3 20% for zunitu}} | for the y-axis use the scale 1 in, for 4unit#√] From the graphs find the values of 'x and y. which satisfy the above simultaneous equations, î

¿4SCALE DEX Stacy | inch for 2 winte Izan klinch for & unita

¡Solution,

(A)/

The simple interest on $1,500 for ten years in 8375, Find the rate per cent'

per. annum

The area of the curved surface of a circular cylinder, or beight 2d cm., la 55 aq.cw. Find the volume of the circular cylinder. fitake TT-27

378 1500 ▼ 10 5. R

18 376 1 100

[×2,6% An#.

(6)[Cireum w-35

of bast

Radius

22 cm.

#22 x 42 - Jon.

10.

Solution.

(a).

(b)

(Vol.-of

Solve the

*12 12th of lea

28x17 - 560

and 24 lb, of pluns

cost $72, and 161b, of melons and 8 1b

of plums coat 800, find the price per { lb. of asch kind of fruit.

28x2+172-56-0

(7x-8) (4x+1)=0 12

Suppose the price of one lb. of melons' Sta x; and one lb. of plume is jy.

\12x + 24y =72

1630 Hadi

((1);~:(11) we have,

¡Solation,

2y -15 arxadoo. (11))

12.

** 1.5)

((m) GiventABCD is a para?

DC_CN.

To prove: (1) AM-HN

(11)GM-MB,

'Proofs in trianglés ABU, NOM

AMB UNC (vart.opp. [s)' /HCN =/MHA (w1t./s, DGN//AB) AB -- CN (4B«DC=CN}

C. AA 2 A NCHA (1.1.8.)

MN ...................(4)":

EA) Given) TABmCD.

To prove

Proof1

(i)

0 is the centre of the circle

BO biscota APC.

Drop perpendiculars GX, OY' to AB and CD reap, të cut. AS At X and CD at T.

In tekangles OPK, OFE

/OXP -/OYP* (nue

OP-OF OXY

40PX = 4 OP¥

• LOFX-/OFY.

(chors -, dist.,

(B.H,5),

PO DIBanan ZA FCA

(a)z Pind, by logarithms, the value of,

7.10 69

In the figura, ABCD 18 • restangie. W Pind

the length of}RP.

113.

4Y=3x+12

-6Y=78-9x}

Ans

國際合作探發

科學

季節風的秘密

探测印度荐工作的第一

超過了印度及巴基斯坦的

氣作 造

的工作此

象部州成

可以證明

的水份。

年花

英殿在印度当

替初生嬰兒診病

微也比 娃棺成業死亡的情形緻碑太空中说

的政府及私人横评 在失效的通路附 分安全媸流入血液之計

爱年 手術畔作「分手術 分道,過多的水

太空鷄蛋

已無知該地心引力作用。

獲得的知識,可作太空高蛋 成

腾得特別,

跳赍化形

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真四張二初月五年忌甲屉暴

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