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Capstone Aug 18 - 24 25 questions
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Monday 18 August 2014

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Simplify: √384

    Answer: 8√6
  2. 2. Algebra

    Complete the square: x² + x + 5

    Answer: (x + 1⁄2)² + 19⁄4
  3. 3. Geometry

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

    Answer: 207.55cm²
  4. 4. Ratio

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

    Answer: 72:63:56
  5. 5. Statistics

    Find the mean, median and range of: 71, 63, 13, 27, 13, 15, 69, 25, 98. Give your answer to 2 decimal places

    Answer: Mean = 43.78, Median = 27, Range = 85

Tuesday 19 August 2014

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Simplify: √756

    Answer: 6√21
  2. 2. Algebra

    Complete the square: 5x² + 40x - 9

    Answer: 5(x + 4)² - 89
  3. 3. Geometry

    Find area of triangle: a = 24cm, b = 20cm, angle = 74°. Give your answer to 2 decimal places

    Answer: 230.7cm²
  4. 4. Ratio

    a:b is 8:5 and b:c is 9:5. Find a:b:c in its simplest form.

    Answer: 72:45:25
  5. 5. Statistics

    Find the mean, median and range of: 100, 93, 81, 90, 47, 18, 100. Give your answer to 2 decimal places

    Answer: Mean = 75.57, Median = 90, Range = 82

Wednesday 20 August 2014

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Simplify: 2√12

    Answer: 4√3
  2. 2. Algebra

    Complete the square: 3x² + 6x - 2

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

    Find area of triangle: a = 16cm, b = 13cm, angle = 67°. Give your answer to 2 decimal places

    Answer: 95.73cm²
  4. 4. Ratio

    a:b is 3:2 and b:c is 7:8. Find a:b:c in its simplest form.

    Answer: 21:14:16
  5. 5. Statistics

    Find the mean, median and range of: 18, 42, 99, 34, 45, 21, 32, 64. Give your answer to 2 decimal places

    Answer: Mean = 44.38, Median = 38, Range = 81

Thursday 21 August 2014

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Simplify: √250

    Answer: 5√10
  2. 2. Algebra

    Complete the square: x² - 11x - 7

    Answer: (x - 11⁄2)² - 149⁄4
  3. 3. Geometry

    Find area of triangle: a = 15cm, b = 25cm, angle = 40°. Give your answer to 2 decimal places

    Answer: 120.52cm²
  4. 4. Ratio

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

    Answer: 9:63:49
  5. 5. Statistics

    Find the mean, median and range of: 49, 95, 48, 44, 24, 60, 20, 53, 35. Give your answer to 2 decimal places

    Answer: Mean = 47.56, Median = 48, Range = 75

Friday 22 August 2014

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Simplify: √468

    Answer: 6√13
  2. 2. Algebra

    Complete the square: 3x² + 30x + 13

    Answer: 3(x + 5)² - 62
  3. 3. Geometry

    Find area of triangle: a = 21cm, b = 16cm, angle = 62°. Give your answer to 2 decimal places

    Answer: 148.34cm²
  4. 4. Ratio

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

    Answer: 28:63:81
  5. 5. Statistics

    Find the mean, median and range of: 93, 95, 97, 65, 72, 32, 16. Give your answer to 2 decimal places

    Answer: Mean = 67.14, Median = 72, Range = 81