Firrhill High School. Mathematics Department. Level 5

Transcription

1 Firrhill High School Mathematics Department Level 5

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3 Home Exercise 1 - Basic Calculations Int 2 Unit 1 1. Round these numbers to 2 significant figures a) (b) (c) 562 d) (e) (f) Write the numbers in Question 1 in Scientific Notation(Standard Form): 3. Write these numbers in full: a) 4.27 x 10 5 (b) 3.55 x 10 7 (c) 2.01 x 10 2 d) 4.38 x 10-8 (e) 7.27 x 10-5 (f) 4 x a) A spaceship travels at a speed of 2.57 x 10 4 miles per hour. How far is it to the moon if it takes the spaceship 72hours to reach it? b) A textbook has a thickness of 1.35 x 10-2 metres. The book contains 240 pages. Calculate the thickness of one page, be careful! 5. Calculate the compound interest on: a) 1500 at a rate of 6% p.a. for 3 yrs. (b) at a rate of 4.5% p.a. for 5 yrs. 6. Miss Cairns is a secondary school teacher. She earns per annum. Her union agree a 3-year pay deal which will see her get an annual rise of 2.5%. How much will Miss Cairns earn in 3 years time? 7. A painting valued at in 2005 has appreciated at a steady rate of 12% per annum for each of the last 6 years. What was the value of the painting in 2011? 8. A van rental company purchases vans costing each. The value of a van depreciates by 25% in its first year and then by 12% in the second year. a) What is the van worth after the 2 years? b) A van is replaced when its value falls below half its original price. After how many years will the company replace a van if it continues to fall by 12% p.a.? 9. The cost of a new laptop has fallen by 16% since A laptop currently costs 441. How much did a laptop cost in 2009?

4 Home Exercise 2 - Volumes Int 2 Unit 1 1. Calculate the volume of each shape below: a) (b) (c) d) (e) (f) 2. Calculate the volume of these composite shapes: a) (b) (c) 3. A waste paper bin is in the shape of a large cone with a smaller cone removed. The large cone has radius 14cm and height 22cm. The small cone has radius 8cm. Calculate the volume of the bin. 4. The diagram shows a cylinder with a cone cut from it. The cone and the cylinder both have radius 24cm and height 40cm. Calculate the volume of the solid once the cone has been removed.

5 Home Exercise 3 - Straight Lines Show all working - No Calculator allowed! Int 2 Unit 1 1. Sketch the following: a) y = 2x + 3 (b) x - y = 4 (c) 3x + 2y = 6 2. Write down the gradient and y-intercept of each line below: a) y = 3x - 5 (b) y = -2x + 4 (c) 2y = 8x - 6 d) x + y = 7 (e) 3x + 2y = 12 (f) 5y - 15x + 20 = 0 3. Calculate the gradient of the line connecting these points: a) (4, 5) & (8, 17) (b) (-2, 3) & (4, 12) (c) (-1, 0) & (-4, -6) 4. Find these equations: a) m = 2, y-int = 5 (b) m = -3, y-int = 2 (c) m = ½, (0, -6) d) (0, 5) & (6, 17) (e) (-2, 3) & (0, 12) (f) (1, 0) & (0, -6) 5. Find the equation of each of these lines: a) (b) (c) 6. Write down the gradient of: (i) a VERTICAL line (ii) a HORIZONTAL line

6 Home Exercise 4 - Algebra 1 Show all working - No Calculator allowed! Int 2 Unit 1 1. Expand the following: a) 5(2x + 1) (b) 7(3x + 3) (c) 9(2x + 1) d) x(4x + 5) (e) m(2x + 4) (f) x 2 (2x + 9) g) (x + 3)(x + 7) (h) (p 1)(p + 6) (i) (u 5)(u 6) j) (2m 3)(5m + 6) (k) (3w 2) 2 (l) (5t 3)(2t 7) m) (x + 2)(x 2 + 3x 1) (n) (2p 3)(3p 2 3p + 2) (p) (3u 4)(5u 2 3u 1) 2. Factorise the following: a) 6x - xy (b) 3p + 6pq (c) x 2-6x d) 2n - 4n 2 (e) x 2-16 (f) 2y - 10xy g) 100 p 2 (h) 4m 2-49n 2 (i) 36-9n 2 j) x 2 + 7x + 12 (k) a 2 - a - 20 (l) c 2-11c + 30 m) y 2-3y - 10 (n) u 2 + 5u - 14 (p) w 2-10w + 24 q) 2a 2 - a - 15 (r) 3p p + 12 (s) 5u 2 + 4u - 12 t) 4x 2-8x + 3 (u) 4x 2 + x - 3 (v) 6x x - 2 w) 12x 2-40x + 32 (x) 30p 2-5p - 10 (y) 8n 2-28n + 12

7 Home Exercise 5 - Circles Int 2 Unit 1 1. For each diagram below, calculate the: a) arc length (b) sector area. i) (ii) (iii) 15cm 2. In each diagram below calculate the angle at the centre: a) (b) 3. In each circle, centre O, below, calculate x: a) (b) (c) x 4. The diagram shows a prism whose cross-section is the area between two sectors. One sector has radius OA = 12cm and the other has radius OC = 15cm. Find the shaded area and hence the volume of this prism.

8 Home Exercise 6 - Pythagoras Int 2 Unit 2 1. Calculate x in each of the following: a) (b) (c) 2. A ladder 5.2 metres long is resting against the top of a wall, as shown. Calculate h, the height of the wall. 3. The length of this football pitch is 105 m and the breadth of the pitch is 60m. Calculate the distance, shown by a dotted line, from one corner flag to the opposite corner flag on this pitch. 4. The diagram opposite shows a rhombus ABCD. Given the information in the diagram, calculate the length of AB. 5. A ship sails 18km due east from the harbour and then 8km due south before getting into difficulty. A lifeboat leaves the same harbour and sails directly to the sinking ship. How far does the lifeboat sail?

9 Home Exercise 7 - Basic Trigonometry Int 2 Unit2 1. Calculate the length of the sides marked x, y and z. a) (b) (c) 2. Calculate the length of the angles marked a, b and c. a) (b) (c) 3. a) The diagram shows a plane coming in to land. Calculate the size of the angle the plane will make with the ground as it lands. b) A long handled brush is leaning against a wall. The brush is 1.8 metres long. It makes an angle of 72 with the ground. Calculate how far up the wall the top of the brush handle reaches. c) Triangle ABC is isosceles. Triangle ADC is right angled. AC and BC are both 30 centimetres long. AB is 20 centimetres long. Calculate the size of the angle marked x.

10 Home Exercise 8 - Trig 1 Int 2 Unit 2 1. Calculate: a) the Area b) the length of side PR. 2. The diagram shows a triangular shaped garden. A jogger runs from one corner of the garden to another, as shown. Calculate: a) how far he ran. b) the garden s Area. 3. Three towns Applegrove, Bananafield and Carrotsville form a triangle on a map Their distances are shown in this diagram. Find the size of the angle ABC. A B C 4. Another three towns Portland, Queensland and Ridgeland form a triangle on a map. Calculate the size of angle RPQ. 5. Two wires holding a flagpole are fastened at the same point on the flagpole and two points on the ground 12 metres apart. The longer wire is frayed and has to be replaced. What length of wire must be bought.

11 Home Exercise 9 - Simultaneous Equ. s Show all working - No Calculator allowed! Int 2 Unit 2 1. a) Sketch this pair of equations on the same diagram: y = 2x + 2 b) Write down the point of intersection. y = 6-2x 2. Solve: a) a + 2b = 7 (b) 2a + 3c = 9 (c) 4x + 2y = -10 3a - 2b = 13 3a + c = 10 3x - 5y = mugs of coffee and 3 double chocolate muffins cost a total of 18 4 mugs of coffee and 5 double chocolate muffins cost a total of How much will a mug of coffee cost, and how much will a double chocolate muffin cost? 4. The senior pupils are organising an end of year dance. Tickets for the dance cost 3 for students and 6 for teachers. Altogether the school takes in 270 from ticket sales. a) Let x represent the number of students attending the dance and y represent the number of teachers. Write down an equation involving x and y. b) Given that 70 people attend the dance, write down another equation in x and y. c) How many students attended the dance? d) What is the ratio of students to teachers in its simplest form?

12 Home Exercise 10 - Charts & Graphs Int 2 Unit 2 1. The percentage marks of 24 pupils in a test are shown below represents 34% n = 24 a) Show this information in a boxplot. b) Find the semi-interquartile range of these marks. 2. The marks of 18 pupils in a test were a) Find the median, lower and upper quartiles of these marks. b) Draw a boxplot to illustrate these marks. c) Another class of 18 pupils sat the same test. A boxplot of their marks is shown below. Which class did better overall? 3. The grades in a higher Maths exam obtained by a group of 72 pupils are shown. Calculate the angles that are needed to draw a Pie Chart. Do NOT draw the Pie chart! 4. A survey of 2500 cars was carried out into their place of origin. The results are shown opposite. a) List the countries in order starting with the highest. b) How many of the cars surveyed came from the UK? c) How many cars came from Japan?

13 Home Exercise 11- Statistics Int 2 Unit 2 1. Calculate the mean and standard deviation of: a) (b) a) The number of pupils in 7 S3 classes are: Calculate the mean and standard deviation of the class sizes. b) In the same school the mean and standard deviation of the number of pupils in 7 S4 classes are 22 and 4.4 respectively. Make two comparisons between the class sizes in third year and in fourth year. 3. For the word MATHEMATICS, what is the probability that a letter chosen at random will be a: a) vowel (b) T (c) X? 4. The colour of t-shirts worn by 40 different S2 pupils on a non-uniform day was recorded as follows: a) Copy and complete the table. b) Construct a 5-figure summary from this table. c) Calculate the Semi-IQR. d) Draw a boxplot to illustrate the info. Colour Frequency Cumulative Freq. Blue 4 Green 3 White 5 Red 8 Yellow 2 Other 5. The scattergraph below shows the Maths & Physics marks of a group of pupils in an S4 examination. A line of best fit has been drawn on the diagram. a) Find the equation of the line of best fit. b) What would a pupil who scored 72 in Physics get in Maths using your equation?

14 Home Exercise 12 - Algebra 2 Show all working - NO Calculator allowed! Int 2 Unit 3 1. Express the following as a single fraction and simplify: a) (b) a 3 (c) x b a b a Simplify these fractions: a) (2x + 8)(3x - 4) 6 10 (3x 4) - (b) (5 + 3m) 2 (2 3x) (3m + 5)(2 2 3x) - - (c) 2x x 7 5x 15x Change the subject of each formulae below to m: a) R = 3m - 2 (b) P = 5 + 7m 2 (c) T - 5m = Simplify: a) 24 (b) 96 (c) d) (e) (f) Rationalise the denominators for the following: a) (b) (c) Simplify, expressing your answers with positive powers: a) d) x 3 x 5 2 x 4 2x 5x 6 3x (b) (m 4 ) 3 (c) 3p 4 3 2p 5 (e) find q 3, when q = 8 (f) find x 1 3, when m = 27-5

15 Home Exercise 13 - Quadratics Int 2 Unit 3 1. Write down the equation in the form y = ax 2 for these graphs: a) (b) 2. Write down the equation in the form y = (x - a) 2 + b, or y = b - (x - a) 2 for these graphs: a) (b) For question 2, use the DIAGRAMS TO WRITE DOWN the solutions to f(x) = Solve by factorisation: a) 2x 2-4x = 0 (b) x 2 + 5x + 6 = 0 (c) 2x 2-5x - 3 = 0 5. Solve using the quadratic formula: a) x 2 + 2x - 4 = 0 (b) 2x 2 + 3x - 4 = 0 (c) 3x 2-6x + 2 = 0 6. For the following find the axis of symmetry, turning point & whether it s a max or min: a) y = (x - 4) 2-10 (b) y = 16 - (x + 6) 2 (c) y = (x + 2) 2-6

16 Home Exercise 14 - Quadratic Function 2 Int 2 Unit 3 1. For the following Quadratics in the forms, y = (x - a) 2 + b or b - (x - a) 2, find the (i) turning point and its nature (ii) y-intercept by making x = 0: a) y = (x - 3) (b) y = (x + 5) 2-4 (c) y = 12 - (x + 6) 2 d) y = 5 - (x - 2) 2 (e) y = (x - 12) 2-8 (f) y = 5 - (x - 9) 2 2. The diagram below shows the graph of y = (x + a) 2 + b. a) Find the values of a and b. b) State the equation of the axis of symmetry. 3. The parabola in the diagram below is y = (x 4)2 25. a) State the coordinates of the turning point b) Find the coordinates of C. c) A is the point (-1, 0). State the coordinates of B. 4. Each quadratic function below has an equation in the form y = ax 2. Write down the equation of each function. a) (b) (c) 5. Solve the following correct to 2 d.p. a) x 2 + 3x + 2 = 0 (b) x 2 + 5x + 2 = 0 (c) 2x 2 + 3x - 4 = 0 d) 3x 2-6x + 2 = 0 (e) 3 + 4t - 4t 2 = 0 (f) 2x 2 + 3x - 4 = 0

17 Home Exercise 15 - Trig 2 1. Sketch the following graphs for 0 x 360 Int 2 Unit 3 a) y = 3sin2x (b) y = cos2x + 3 (c) y = 8sin3x Write down the equations for each of these graphs: a) (b) c) (d) 3. Solve these equations for 0 x 360 a) 2sinx 1 = 0 (b) 4cosx 3 = 0 (c) 5tanx 12 = 0 d) 3sinx + 6 = 7 (e) 4tanx 3 = 10 (f) 6cosx 2 = 3 4. a) Write down the equation of the graph opposite in the form y = asin x. b) The line y = 2 meets this graph at the points P and Q. Find the coordinates of P and Q.