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Capstone Jul 16 - 22 25 questions
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Monday 16 July 2012

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Simplify: √216

    Answer: 6√6
  2. 2. Algebra

    Complete the square: 5x² - 20x - 7

    Answer: 5(x - 2)² - 27
  3. 3. Geometry

    Find area of triangle: a = 26cm, b = 20cm, angle = 79°. Give your answer to 2 decimal places

    Answer: 255.22cm²
  4. 4. Ratio

    a:b is 7:8 and b:c is 9:4. Find a:b:c in its simplest form.

    Answer: 63:72:32
  5. 5. Statistics

    Find the mean, median and range of: 36, 68, 10, 35, 31, 91, 65

    Answer: Mean = 48, Median = 36, Range = 81

Tuesday 17 July 2012

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Simplify: √224

    Answer: 4√14
  2. 2. Algebra

    Complete the square: x² + 9x - 1

    Answer: (x + 9⁄2)² - 85⁄4
  3. 3. Geometry

    Find area of triangle: a = 22cm, b = 27cm, angle = 69°. Give your answer to 2 decimal places

    Answer: 277.27cm²
  4. 4. Ratio

    a:b is 5:4 and b:c is 6:1. Find a:b:c in its simplest form.

    Answer: 15:12:2
  5. 5. Statistics

    Find the mean, median and range of: 26, 76, 51, 19, 40, 30, 79, 43

    Answer: Mean = 45.5, Median = 41.5, Range = 60

Wednesday 18 July 2012

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Simplify: √475

    Answer: 5√19
  2. 2. Algebra

    Complete the square: 2x² + 12x - 8

    Answer: 2(x + 3)² - 26
  3. 3. Geometry

    Find area of triangle: a = 25cm, b = 22cm, angle = 49°. Give your answer to 2 decimal places

    Answer: 207.55cm²
  4. 4. Ratio

    a:b is 4:3 and b:c is 5:2. Find a:b:c in its simplest form.

    Answer: 20:15:6
  5. 5. Statistics

    Find the mean, median and range of: 65, 79, 18, 26, 85, 100, 68, 48. Give your answer to 2 decimal places

    Answer: Mean = 61.13, Median = 66.5, Range = 82

Thursday 19 July 2012

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Simplify: √160

    Answer: 4√10
  2. 2. Algebra

    Complete the square: 3x² - 30x - 9

    Answer: 3(x - 5)² - 84
  3. 3. Geometry

    Find area of triangle: a = 20cm, b = 17cm, angle = 40°. Give your answer to 2 decimal places

    Answer: 109.27cm²
  4. 4. Ratio

    a:b is 2:3 and b:c is 7:3. Find a:b:c in its simplest form.

    Answer: 14:21:9
  5. 5. Statistics

    Find the mean, median and range of: 84, 99, 48, 23, 74, 86, 32, 34, 85. Give your answer to 2 decimal places

    Answer: Mean = 62.78, Median = 74, Range = 76

Friday 20 July 2012

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Simplify: √425

    Answer: 5√17
  2. 2. Algebra

    Complete the square: 5x² - 10x - 12

    Answer: 5(x - 1)² - 17
  3. 3. Geometry

    Find area of triangle: a = 19cm, b = 30cm, angle = 80°. Give your answer to 2 decimal places

    Answer: 280.67cm²
  4. 4. Ratio

    a:b is 5:7 and b:c is 8:1. Find a:b:c in its simplest form.

    Answer: 40:56:7
  5. 5. Statistics

    Find the mean, median and range of: 64, 18, 41, 51, 67, 74, 32, 22, 47. Give your answer to 2 decimal places

    Answer: Mean = 46.22, Median = 47, Range = 56