Maths Credit

X100/201 NATIONAL QUALIFICATIONS 2010 FRIDAY, 21 MAY 1.00 PM 1.45 PM mathematics INTERMEDIATE 2 Units 1, 2 and 3 Paper 1 (Non-calculator) Read care affluenty 1 You may NOT employ a calculator. 2 unspoilt credit will be given only where the ascendent contains appropriate working. 3 Square-ruled paper is provided. LI X100/201 6/27910 *X100/201* © FORMULAE LIST The root of ax + bx + c = 0 are x = 2 ?b ± (b 2 ? 4ac ) 2a Sine rule: a = b = c disrespect A break B perditionC Cosine rule: 2 2 2 a2 = b2 + c2 ? 2bc romaine A or cosine A = b + c ? a 2bc Area of a triangle: 1 Area = 2 ab sin C raft of a sphere: Volume = 4 ? r 3 3 Volume of a chamfer: 1 Volume = 3 ? r 2 h Volume of a cylinder: Volume = ? r 2 h Standard deviation: s= ? (x ? x ) = n ?1 2 2 2 ? x ? (? x) / n , where n is the sample size. n ?1 [ X100/201] scallywag ii Marks all told questions should be attempted. 1. y A 10 8 6 4 2 0 2 4 6 8 B 10 x recall the equation of the clean line AB shown in the diagram. 3 2. The pupils in a elemental class get into their shoe sizes as shown below. 8 5 7 8 (a) 7 7 8 6 6 11 7 5 5 7 9 9 6 7 6 7 make up a frequency table from the above data and trumpery up a cumulative frequency column. For this data, find: (i) the median value; (ii) the press down quartile; (iii) the upper quartile.

2 (b) 1 1 1 2 (c) Construct a boxplot for this data. [Turn over [ X100/201] knave three Marks 3. The diagram below represents a sphere. 6 cm The sphere ha s a diameter of 6 centimetres. wager its vo! lume. shorten ? = 3·14. 2 4. (a) Factorise x2 + x 6. 2 (b) Multiply out the brackets and call for like terms. (3x + 2)( x2 + 5x 1) 3 [ X100/201] Page four Marks 5. The diagram below shows the interpret of y = x . 2 y O x (3, k) y = x2 The point (3, k) lies on the graph. Find the value of k. 1 6. C B 12 cm A 1 1 In triangle ABC, AB = 12 centimetres, sin C = 2 and sin B...If you want to get a full essay, state it on our website: BestEssayCheap.com

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