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0580 w09 qp_21
1.
w w ap eP m e tr .X w om .c s er UNIVERSITY OF CAMBRIDGE
INTERNATIONAL EXAMINATIONS International General Certificate of Secondary Education *0249795558* 0580/21 MATHEMATICS October/November 2009 Paper 2 (Extended) 1 hour 30 minutes Candidates answer on the Question Paper. Additional Materials: Electronic calculator Mathematical tables (optional) Geometrical instruments Tracing paper (optional) 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, highlighters, glue or correction fluid. Answer all questions. If working is needed for any question it must be shown below that question. Electronic calculators should be used. If the degree of accuracy is not specified in the question, and if the answer is not exact, give the answer to three significant figures. Give answers in degrees to one decimal place. For π , use either your calculator value or 3.142. At the end of the examination, fasten all your work securely together. 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 70. This document consists of 12 printed pages. IB09 11_0580_21/7RP © UCLES 2009 [Turn over
2.
2 1 For Examiner's Use For the diagram
above write down (a) the order of rotational symmetry, Answer(a) [1] Answer(b) [1] (b) the number of lines of symmetry. 2 Write down the next two prime numbers after 43. Answer 3 (cos30o ) 2 _ (sin30o ) 2 Use your calculator to find the value of 2(sin120o )(cos120o ) and [2] . Answer Answer 3 4 Simplify © UCLES 2009 [2] [2] 5 5 2 1 _2 x ÷ x . 8 2 0580/21/O/N/09
3.
3 5 In 1970 the
population of China was 8.2 x 108. In 2007 the population of China was 1.322 x 109. Calculate the population in 2007 as a percentage of the population in 1970. For Examiner's Use Answer % [2] 6 A= 0 1 −8 −4 B= 7 1 0 −5 Calculate the value of 5 |A| + |B|, where |A| and |B| are the determinants of A and B. Answer 7 [2] Shade the region required in each Venn Diagram. B A B A C C A' ∩ (B ∩ C ) A' ∩ (B ∪ C ) [2] © UCLES 2009 0580/21/O/N/09 [Turn over
4.
4 8 Find the length
of the line joining the points A(− 4, 8) and B(−1, 4). Answer AB = 9 For Examiner's Use [2] Solve the simultaneous equations 6x + 18y = 57, 2x – 3y = −8. Answer x = y= [3] 10 The braking distance, d, of a car is directly proportional to the square of its speed, v. When d = 5, v = 10. Find d when v = 70. Answer d = © UCLES 2009 0580/21/O/N/09 [3]
5.
5 11 For Examiner's Use 24 cm 18 cm NOT
TO SCALE 18 cm 24 cm 24 cm 18 cm 18 cm 24 cm 24 cm 18 cm 18 cm 24 cm Each of the lengths 24 cm and 18 cm is measured correct to the nearest centimetre. Calculate the upper bound for the perimeter of the shape. Answer cm [3] Answer [3] 12 Simplify 16 – 4(3x – 2)2. © UCLES 2009 0580/21/O/N/09 [Turn over
6.
6 13 Solve the
inequality 6(2 − 3x) − 4(1 − 2x)=Y= 0. For Examiner's Use Answer [3] 14 Zainab borrows $198 from a bank to pay for a new bed. The bank charges compound interest at 1.9 % per month. Calculate how much interest she owes at the end of 3 months. Give your answer correct to 2 decimal places. Answer $ [3] 15 P Q M p O R r O is the origin and OPQR is a parallelogram whose diagonals intersect at M. The vector OP is represented by p and the vector is represented by r. (a) Write down a single vector which is represented by (i) p + r, Answer(a)(i) Answer(a)(ii) (ii) 1p 2 [1] [1] – 1 r. 2 (b) On the diagram, mark with a cross (x) and label with the letter S the point with position vector 1 p + 3 r. 2 4 © UCLES 2009 [2] 0580/21/O/N/09
7.
7 16 For Examiner's Use B North NOT TO SCALE 3 km North 3
km C 85° A A, B and C are three places in a desert. Tom leaves A at 06 40 and takes 30 minutes to walk directly to B, a distance of 3 kilometres. He then takes an hour to walk directly from B to C, also a distance of 3 kilometres. (a) At what time did Tom arrive at C? Answer (a) [1] (b) Calculate his average speed for the whole journey. Answer (b) km/h [2] (c) The bearing of C from A is 085°. Find the bearing of A from C. Answer (c) [1] 17 (a) In 2007, a tourist changed 4000 Chinese Yuan into pounds (£) when the exchange rate was £1 = 15.2978 Chinese Yuan. Calculate the amount he received, giving your answer correct to 2 decimal places. Answer(a) £ [2] (b) In 2006, the exchange rate was £1 = 15.9128 Chinese Yuan. Calculate the percentage decrease in the number of Chinese Yuan for each £1 from 2006 to 2007. Answer(b) © UCLES 2009 0580/21/O/N/09 % [2] [Turn over
8.
8 18 For Examiner's Use y NOT TO SCALE y =
2x + 4 y = mx + c A B x 6 units The line y = mx + c is parallel to the line y = 2x + 4. The distance AB is 6 units. Find the value of m and the value of c. Answer m = © UCLES 2009 0580/21/O/N/09 and c = [4]
9.
9 19 For Examiner's Use NOT TO SCALE B D 68° O C E F A Points A,
B and C lie on a circle, centre O, with diameter AB. BD, OCE and AF are parallel lines. Angle CBD = 68°. Calculate (a) angle BOC, Answer(a) Angle BOC = [2] Answer(b) Angle ACE = [2] (b) angle ACE. © UCLES 2009 0580/21/O/N/09 [Turn over
10.
10 20 The number
of hours that a group of 80 students spent using a computer in a week was recorded. The results are shown by the cumulative frequency curve. For Examiner's Use 80 60 Cumulative frequency 40 20 0 10 20 30 40 50 60 70 Number of hours Use the cumulative frequency curve to find (a) the median, Answer(a) h [1] Answer(b) h [1] Answer(c) h [1] (b) the upper quartile, (c) the interquartile range, (d) the number of students who spent more than 50 hours using a computer in a week. Answer(d) © UCLES 2009 0580/21/O/N/09 [2]
11.
11 21 For Examiner's Use 40 30 car Speed 20 (m / s) truck 10 0 10 20 30 40 50 60 Time
(seconds) The graph shows the speed of a truck and a car over 60 seconds. (a) Calculate the acceleration of the car over the first 45 seconds. Answer(a) m/s2 [2] (b) Calculate the distance travelled by the car while it was travelling faster than the truck. Answer(b) m [3] Question 22 is printed on the next page. © UCLES 2009 0580/21/O/N/09 [Turn over
12.
12 f(x) = 4x
+ 1 22 g(x) = x3 + 1 h(x) = 2x +1 3 For Examiner's Use (a) Find the value of gf(0). Answer(a) [2] Answer(b) [2] Answer(c) [2] (b) Find fg(x). Simplify your answer. (c) Find h -1(x). Permission to reproduce items where third-party owned material protected by copyright is included has been sought and cleared where possible. Every reasonable effort has been made by the publisher (UCLES) to trace copyright holders, but if any items requiring clearance have unwittingly been included, the publisher will be pleased to make amends at the earliest possible opportunity. University of Cambridge International Examinations is part of the Cambridge Assessment Group. Cambridge Assessment is the brand name of University of Cambridge Local Examinations Syndicate (UCLES), which is itself a department of the University of Cambridge. © UCLES 2009 0580/21/O/N/09
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