1MA1 3H Nov 2019 Solutions
1MA1 3H Nov 2019 Solutions
Monday 11 Novemberz0lg
Afternoon (Time: t hour 30 minutes) Paper Reference 1MAI /3H
Mathematics
Paper 3 (Calculator)
f'1Y Arr-i.Srru G-P*-y
Higher Tier
lnstructions
o Useblack ink or ball-point pen.
o Fillin the boxes at the top of this page with your name,
centre number and candidate number.
a Answer all questions.
a Answer the questions in the spaces provided
- there may be more space than you need.
a You must show allyour working.
O Diagrams are NOT accurately drawn, unless otherwise indicated.
o Calculators may be used.
O lf your calculator does not have a z button, take the value of z to be 3.142 unless
the question instructs otherwise.
lnformation
o The total mark for this paper is 80
o The marks for each question are shown in brackets
- use this as a guide as to how much time to spend on each question.
Advice
o Read each question carefully before you start to answer it.
o Keep an eye on the time.
o Try to answer every question.
o Check your answers if you have time at the end.
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(b) Factorise fully 9x2 + 6x
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(b) Write your answer to part (a) correct to 4 significant figures.
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0 10 20 30 40
Using the scatter graph, find an estimate for Jamie's mark in the Maths test.
r>"6 seconds
4 is 3 marks
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Time 13 30
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(b) Write 4.96 x 10-3 as an ordinary number.
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uestionTis3marks
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Work out the size of the angle marked x.
You must show all your working.
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Monday Tuesday
late
not late x
late -k
not late
not late
Calculate the probability that Bismah will be late on exactly one of the two davs.
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11
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13 Liquid A and liquid B are mixed together in the ratio 2:J3 by volume
to make liquid C.
Liquid A has densitv 1 "21 glcm3
Liquid B has density ll02glcm3
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(Total for Question 13 is 4 marks)
12
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t4 A group of people went to a restaurant.
Each person chose one starter and one main course.
maln course
the number of people who chose soup:the number of people who chose prawns:2:3 L+3 S_
Of those who chose soup,
the number of people who chose lasagne :the number of people who chose curry:5 : 3 .:r $
5*+-3
Of those who chose prawns,
the number of people who chose lasagne :the number of people who chose curry: I :5 \+ ,*-{,
What fraction of the people chose curry?
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15 Prove algebraically that the sum of the squares of any two consecutive even numbers is
always a multiple of 4
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16 y is inversely proportional to the square of x.
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y: 8 when x:2.5
Find the negative value of x when;, : 8
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Use the graph to find estimates for the solutions to the equation x2 - 2x - 2: 0
You must show how you get your solutions.
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Distance travelled
(metres)
0246
3.2-
Time (seconds)
Work out an estimate of the speed, in m/s, of the cyclist at time 6 seconds.
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.= 3. f 2*5*
3.2
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(Total for Question 19 is 3 marks)
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20 Here are the first five ternls ol a sequence.
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Find an expression, in temrs of n. forttrre rirh tennr of ihis sequence.
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21 When a biasecl coin is throu,n ri. times, the probabilitir of gening 4 heads is 1! ={I ?t\+
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work out the prohability of getting 4 tails when the coin is thrown 4 times.
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Work out, in its simplesi forrn, the ratio Zp:ZR
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