Cambridge International Examinations Cambridge Ordinary Level
* 4 4 6 4 8 3 0 8 9 1 *
MATHEMATICS (SYLLABUS D)
4024/12 May/June 2015
Paper 1
2 hours
Candidates answer on the Question Paper. Additional Materials:
Geometrical instruments
READ THESE INSTRUCTIONS FIRST Write your Centre number, candidate number and name on all the work you hand in. Write in dark blue or black pen. You may use a pencil for any diagrams or graphs. Do not use staples, paper clips, glue or correction fluid. DO NOT WRITE IN ANY BARCODES. Answer all questions. If working is needed for any question it must be shown in the space below that question. Omission of essential working will result in loss of marks. ELECTRONIC CALCULATORS MUST NOT BE USED IN THIS PAPER. The number of marks is given in brackets [ ] at the end of each question or part question. The total of the marks for this paper is 80.
This document consists of 19 printed pages and 1 blank page. DC (AC/FD) 97054/2 © UCLES 2015
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2 ELECTRONIC CALCULATORS MUST NOT BE USED IN THIS PAPER. 1
(a) Evaluate
1.3 + 2.9 . 0.2
Answer............................................. [1]
1 1 (b) Evaluate2 # . 4 5
Answer���������������������������������������������� [1]
2
Writethesenumbersinorderofsize,startingwiththesmallest.
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13 7 5 0.7 0.64 20 12 8
Answer...............,...............,...............,...............,...............[2] smallest
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3 3
b
12
4b
Thediagramshowsatrapeziumwithlengthsincentimetres. Theareaofthetrapeziumis120cm2.
Findthevalueofb.
Answerb=...................................... [2]
4
Abagcontainsredcounters,bluecountersandyellowcounters. Thereare60countersinthebag.
Theprobabilitythatacountertakenatrandomfromthebagisredis
2 . 5 5 . Theprobabilitythatacountertakenatrandomfromthebagisblueis 12
Howmanyyellowcountersareinthebag?
Answer��������������������������������������������� [2]
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4 5
FarizatravelsfromLondontoAstana. ThetimeinAstanais5hoursaheadofthetimeinLondon,sowhenitis1000inLondon thelocaltimeinAstanais1500.
ShefliesfromLondontoMoscowandthenfromMoscowtoAstana. TheflightleavesLondonat1225andtakes4hourstoreachMoscow.
1 Farizawaits4 hoursinMoscowfortheflighttoAstana. 2
ShearrivesinAstanaat0525localtime.
HowlongdidtheflightfromMoscowtoAstanatake?
Answer...............hours...............minutes[2] 6
Bywritingeachnumbercorrecttoonesignificantfigure,estimatethevalueof 29.3 2 . 2.04 # 0.874
Answer��������������������������������������������� [2]
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5 7
yisinverselyproportionaltothesquareofx.
Giventhaty=24whenx=2,findywhenx=8.
Answery=..................................... [2]
8
TheVenndiagramshowsthesetsA,BandC. A
B q
p s
t
r u
v C
Listtheelementsof
(a) A∪B,
w
Answer............................................ [1]
(b) B′∩C. Answer............................................ [1]
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6 9
(a) Write0.00000521instandardform. Answer��������������������������������������������� [1]
(b) Givingyouranswerinstandardform,evaluate(6 # 10 7) # (5 # 10 -3) .
Answer��������������������������������������������� [1]
10 Thesetwotrianglesarecongruent. Thelengthsareincentimetres,correcttothenearest0.1cm. q°
5.6
p 62°
3.8
5.6
41°
5.1
Findpandq.
Answerp=...........................................
q=..................................... [2]
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7 11
y 8 7 6 5 4 3 2 1 0
1
2
3
4
5
6
7
8
x
Thediagramshowstheline y = 2x + 1.
ThepointPhascoordinates(a,b)whereaandbarebothpositiveintegers. Thevaluesofaandbsatisfytheinequalitiesa 1 2 ,b 1 7 andb 2 2a + 1.
WritedownallthepossiblecoordinatesofP.
Answer................................................................................................................................................. [2]
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8 12 Omarhasapackofnumbercards. Hepicksthesefivecards. _2
_4
_2
4
1
(a) Writedownthemodeofthefivenumbers. Answer���������������������������������������������� [1]
(b) Hetakesanothercardfromthepack.
(i) Ifthemeanofthesixnumbersis -1 ,whatnumberdidhepick?
Answer���������������������������������������������� [1]
(ii) I fthedifferencebetweenthehighestandlowestofthesixnumbersis12, whatarethetwopossiblenumbershecouldhavepicked?
Answer�������������������� or....................[1]
13 (a) Express60asaproductofitsprimefactors.
Answer��������������������������������������������� [1]
(b) Findthesmallestpossibleintegermsuchthat60misasquarenumber.
Answerm=.................................... [1]
(c) Thelowestnumberthatisamultipleofboth60andtheintegernis180.
Findthesmallestpossiblevalueofn.
Answern=..................................... [1]
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9 14 IntriangleABC,AB=5cmandAC=6cm. (a) ConstructtriangleABC. LineBCisdrawnforyou.
B
C
[2] (b) Measure BAtC inyourtriangle. Answer�������������������������������������������� [1]
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10 15
c = 8a - 3b
(a) Findcwhena = 3andb = - 4 . Answerc=�������������������������������������� [1]
(b) Rearrangetheformulatomakebthesubject.
Answerb=..................................... [2]
16 (a) Evaluate
(i) 2 0 + 2 3 ,
J1N 2 (ii) K O . L9P
Answer�������������������������������������������� [1]
1
Answer�������������������������������������������� [1]
-2
(b) Simplify ^4x 2h .
Answer�������������������������������������������� [1]
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11 J4 0N O representsthetransformationT. 17 Thematrix K 0 1 L P (a) DescribefullythetransformationT. Youmayusethegridbelowtohelpyouanswerthisquestion.
Answer............................................................................................................................................... ....................................................................................................................................................... [2]
(b) ThetransformationTmapstriangleAontotriangleB. TheareaoftriangleBisxcm2.
Find,intermsofx,theareaoftriangleA.
Answer������������������������������������ cm2[1]
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12 18 (a) Factorisecompletely p 2 q - pq .
Answer�������������������������������������������� [1]
(b) (i) Factorise 5x 2 + x - 4 .
Answer�������������������������������������������� [1]
(ii) Hencesolve 5x 2 + x - 4 = 0 .
Answerx=................ or................[1]
19
(a)
Luisworksinanoffice. Fornormaltimeheispaid$8perhour. Forovertimeheispaidthesamerateasnormaltimeplusanextra50%. Onemonthheworks140hoursnormaltimeand10hoursovertime.
Workouthowmuchheispaidforthatmonth’swork.
Answer$........................................ [2]
(b) Sarainvests$240inanaccountthatpays3%peryearsimpleinterest. Sheleavesthemoneyintheaccountfor5years.
WorkouthowmuchmoneySarahasattheendof5years.
Answer$........................................ [2]
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13 20 Thetimestakenfor200peopletocompletea5kmracewererecorded. Theresultsaresummarisedinthecumulativefrequencydiagram. 200 180 160 140 120
Cumulative frequency 100 80 60 40 20 0 16
18
20
22
24
26
28
30
32
34
36
38
40
42
44
Time (minutes)
(a) Usethediagramtoestimate
(i) themediantime, Answer������������������������������minutes[1]
(ii) theinterquartilerangeofthetimes.
Answer������������������������������minutes[2]
(b) Itwasfoundthattherecordingofthetimeswasinaccurate. Thecorrecttimeswerealloneminutemorethanrecorded.
Writedownthemedianandinterquartilerangeofthecorrecttimes.
AnswerMedian=........................minutesInterquartilerange=........................minutes[1]
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14 J 1 21 (a) Expressasasinglematrix 3 K L-2
3N J 4 O-K 5P L-1
0N O. 2P
Answer [2]
J3 - 2N O A= K L p - 1P ThedeterminantofAis2.
(i) Findp.
(b)
Answerp=..................................... [1]
(ii) FindA–1.
Answer [1]
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15 22 Thescaleofamapis1:25000.
(a) Thescalecanbewrittenas1cm:dkm.
Findd.
Answerd=..................................... [1]
(b) Thedistancebetweentwovillagesis8km.
Findthedistance,incentimetres,betweenthetwovillagesonthemap.
Answer���������������������������������������cm[1]
(c) Thedistancebetweenthepeaksoftwomountainsismeasuredonthemapas76mm.
Calculatethedistance,inkilometres,betweenthetwopeaks.
Answer������������������������������������� km[2]
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16 23 (a) Solvetheinequalities. - 4 G 2x - 5 1 7
Answer�������������������������������������������� [2]
(b) Solvethesimultaneousequations. 3x+4y=3 2x–y=13
Answerx=...........................................
y=..................................... [3]
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17 1 24 [Volume of a cone = rr 2 h , curved surface area of a cone = rrl ] 3 4 [Volume of a sphere = rr 3 , surface area of a sphere = 4rr 2 ] 3
h r
Thesolidisformedfromahemisphereofradiusrcmfixedtoaconeofradiusrcmandheighthcm. Thevolumeofthehemisphereisonethirdofthevolumeofthesolid.
(a) Findhintermsofr.
Answerh=..................................... [2]
(b) Theslantheightoftheconecanbewrittenasr k cm,wherekisaninteger.
Findthevalueofk.
Answerk=..................................... [2]
(c) Findanexpression,intermsofrandπ,forthetotalsurfacearea,incm2,ofthesolid.
Answer������������������������������������ cm2[1]
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18 25
C A a O
b
D
B
1 Inthediagram,AisthemidpointofOCandBisthepointonODwhereOB = OD. 3
OA = a andOB = b .
(a) Express,assimplyaspossible,intermsof aandb
(i) AB, Answer�������������������������������������������� [1]
(ii) CD. Answer............................................ [1]
(b) EisthepointonCDwhereCE:ED=1:2.
(i) Express BE ,assimplyaspossible,intermsofaand/orb.
Answer�������������������������������������������� [2]
(ii) WhatspecialtypeofquadrilateralisABEC? Answer�������������������������������������������� [1]
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19 26 (a) Thefirstfourtermsofasequence,S,are89,83,77,71.
(i) FindanexpressionforSn,thenthtermofthissequence.
AnswerSn=.................................... [2]
(ii) FindthesmallestvalueofnforwhichSn