Cambridge International Mathematics

Algebraic fractions (Chapter 16) 349 Example 13 Self Tutor Write as a single fraction: a 2 x + 1 x+2 b 5 x+2 ¡ 1 x¡ 1 a 2 x + 1 ...

350 Algebraic fractions (Chapter 16) 2 Write as a single fraction: a 2 x+1 + 3 x¡ 2 b 5 x+1 + 7 x+2 c 5 x¡ 1 ¡ 4 x+2 d 2 x+2 ¡ 4 ...

Algebraic fractions (Chapter 16) 351 b ¡ 3 (x+ 2)(x¡1) + x x¡ 1 = ¡ 3 (x+ 2)(x¡1) + ³ x x¡ 1 ́μx+2 x+2 ¶ fLCD=(x+ 2)(x¡1)g = ¡3+ ...

352 Algebraic fractions (Chapter 16) 3 Write as a single fraction: a 2 x 3 + 3 x 5 b 2 x 3 £ 3 x 5 c 2 x 3 ¥ 3 x 5 d 2 x 3 ¡ 3 x ...

Continuous data 17 Contents: A The mean of continuous data [11.5] B Histograms [11.6] C Cumulative frequency [11.7] Opening prob ...

354 Continuous data (Chapter 17) Continuous data is placed intoclass intervalswhich are usually represented byinequalities. For ...

Continuous data (Chapter 17) 355 Height (mm) Frequency 206 h< 40 4 406 h< 60 17 606 h< 80 15 806 h< 100 8 1006 h< ...

356 Continuous data (Chapter 17) Height (cm) Frequency (f) 1006 h< 110 1 1106 h< 120 1 1206 h< 130 4 1306 h< 140 19 ...

Continuous data (Chapter 17) 357 Example 2 Self Tutor The table below shows masses of parcels received by a company during one w ...

358 Continuous data (Chapter 17) a Histogram showing cross-country times b The modal class is 266 t< 31. c Middle value (x) F ...

Continuous data (Chapter 17) 359 Sometimes it is useful to know the number of scores that lie above or below a particular value. ...

360 Continuous data (Chapter 17) b Cumulative frequency graphs are very useful forcomparingtwo distributions ofunequal sizes. In ...

Continuous data (Chapter 17) 361 b For girls: i median¼ 158 cm ii For boys: i median¼ 165 cm ii c The two distributions are simi ...

362 Continuous data (Chapter 17) EXERCISE 17C Times (min) Frequency 206 t< 25 18 256 t< 30 45 306 t< 35 37 356 t< 40 ...

Continuous data (Chapter 17) 363 5 The times taken for trampers to climb Ben Nevis were recorded and the results tabled. Time (t ...

364 Continuous data (Chapter 17) 3 A selection of measuring bottles were examined and their capacities were noted. The results a ...

Continuous data (Chapter 17) 365 Review set 17B 1 The table alongside summarises the masses of 50 domestic cats chosen at random ...

366 Continuous data (Chapter 17) 6 In a one month period at a particular hospital the lengths of newborn babies were recorded. T ...

height radius Similarity 18 Contents: A Similarity [4.5] B Similar triangles [4.5] C Problem solving [4.5] D Area and volume of ...

368 Similarity (Chapter 18) Discussion #endboxedheading ² Discuss whether the following pairs of figures are similar: abc de f ² ...