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Capstone Jul 23 - 29 25 questions
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Monday 23 July 2012

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Simplify: √425

    Answer: 5√17
  2. 2. Algebra

    Complete the square: x² - 7x + 12

    Answer: (x - 7⁄2)² - 1⁄4
  3. 3. Geometry

    Find area of triangle: a = 21cm, b = 15cm, angle = 41°. Give your answer to 2 decimal places

    Answer: 103.33cm²
  4. 4. Ratio

    a:b is 7:8 and b:c is 5:4. Find a:b:c in its simplest form.

    Answer: 35:40:32
  5. 5. Statistics

    Find the mean, median and range of: 82, 25, 10, 17, 53, 56, 84, 53, 62. Give your answer to 2 decimal places

    Answer: Mean = 49.11, Median = 53, Range = 74

Tuesday 24 July 2012

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Simplify: 3√12

    Answer: 6√3
  2. 2. Algebra

    Complete the square: 5x² - 10x + 1

    Answer: 5(x - 1)² - 4
  3. 3. Geometry

    Find area of triangle: a = 15cm, b = 26cm, angle = 59°. Give your answer to 2 decimal places

    Answer: 167.15cm²
  4. 4. Ratio

    a:b is 2:7 and b:c is 3:5. Find a:b:c in its simplest form.

    Answer: 6:21:35
  5. 5. Statistics

    Find the mean, median and range of: 41, 44, 50, 25, 68, 34, 87. Give your answer to 2 decimal places

    Answer: Mean = 49.86, Median = 44, Range = 62

Wednesday 25 July 2012

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Simplify: √833

    Answer: 7√17
  2. 2. Algebra

    Complete the square: 4x² - 40x + 8

    Answer: 4(x - 5)² - 92
  3. 3. Geometry

    Find area of triangle: a = 24cm, b = 23cm, angle = 79°. Give your answer to 2 decimal places

    Answer: 270.93cm²
  4. 4. Ratio

    a:b is 4:5 and b:c is 9:5. Find a:b:c in its simplest form.

    Answer: 36:45:25
  5. 5. Statistics

    Find the mean, median and range of: 88, 16, 20, 66, 90, 17, 12, 93

    Answer: Mean = 50.25, Median = 43, Range = 81

Thursday 26 July 2012

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Simplify: √128

    Answer: 8√2
  2. 2. Algebra

    Complete the square: x² - 9x + 6

    Answer: (x - 9⁄2)² - 57⁄4
  3. 3. Geometry

    Find area of triangle: a = 26cm, b = 17cm, angle = 61°. Give your answer to 2 decimal places

    Answer: 193.29cm²
  4. 4. Ratio

    a:b is 1:7 and b:c is 9:2. Find a:b:c in its simplest form.

    Answer: 9:63:14
  5. 5. Statistics

    Find the mean, median and range of: 57, 10, 13, 43, 81, 86, 83, 76. Give your answer to 2 decimal places

    Answer: Mean = 56.13, Median = 66.5, Range = 76

Friday 27 July 2012

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Simplify: 5√50

    Answer: 25√2
  2. 2. Algebra

    Complete the square: 3x² - 30x - 6

    Answer: 3(x - 5)² - 81
  3. 3. Geometry

    Find area of triangle: a = 24cm, b = 27cm, angle = 67°. Give your answer to 2 decimal places

    Answer: 298.24cm²
  4. 4. Ratio

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

    Answer: 64:56:7
  5. 5. Statistics

    Find the mean, median and range of: 49, 22, 46, 29, 83, 77, 93

    Answer: Mean = 57, Median = 49, Range = 71