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Capstone Aug 13 - 19 25 questions
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Monday 13 August 2012

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Simplify: √896

    Answer: 8√14
  2. 2. Algebra

    Complete the square: 5x² - 60x + 12

    Answer: 5(x - 6)² - 168
  3. 3. Geometry

    Find area of triangle: a = 15cm, b = 12cm, angle = 52°. Give your answer to 2 decimal places

    Answer: 70.92cm²
  4. 4. Ratio

    a:b is 7:5 and b:c is 9:2. Find a:b:c in its simplest form.

    Answer: 63:45:10
  5. 5. Statistics

    Find the mean, median and range of: 81, 16, 51, 86, 37, 71, 20. Give your answer to 2 decimal places

    Answer: Mean = 51.71, Median = 51, Range = 70

Tuesday 14 August 2012

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Simplify: √243

    Answer: 9√3
  2. 2. Algebra

    Complete the square: x² + 9x + 7

    Answer: (x + 9⁄2)² - 53⁄4
  3. 3. Geometry

    Find area of triangle: a = 30cm, b = 26cm, angle = 50°. Give your answer to 2 decimal places

    Answer: 298.76cm²
  4. 4. Ratio

    a:b is 1:5 and b:c is 4:7. Find a:b:c in its simplest form.

    Answer: 4:20:35
  5. 5. Statistics

    Find the mean, median and range of: 41, 89, 12, 40, 48, 78, 51, 51

    Answer: Mean = 51.25, Median = 49.5, Range = 77

Wednesday 15 August 2012

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Simplify: √468

    Answer: 6√13
  2. 2. Algebra

    Complete the square: 2x² + 12x + 8

    Answer: 2(x + 3)² - 10
  3. 3. Geometry

    Find area of triangle: a = 27cm, b = 25cm, angle = 80°. Give your answer to 2 decimal places

    Answer: 332.37cm²
  4. 4. Ratio

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

    Answer: 15:10:8
  5. 5. Statistics

    Find the mean, median and range of: 26, 66, 53, 38, 92, 59, 77, 18, 29. Give your answer to 2 decimal places

    Answer: Mean = 50.89, Median = 53, Range = 74

Thursday 16 August 2012

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Simplify: 5√50

    Answer: 25√2
  2. 2. Algebra

    Complete the square: x² + 9x + 1

    Answer: (x + 9⁄2)² - 77⁄4
  3. 3. Geometry

    Find area of triangle: a = 24cm, b = 28cm, angle = 71°. Give your answer to 2 decimal places

    Answer: 317.69cm²
  4. 4. Ratio

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

    Answer: 8:10:15
  5. 5. Statistics

    Find the mean, median and range of: 69, 84, 82, 44, 95, 99, 93, 94, 57. Give your answer to 2 decimal places

    Answer: Mean = 79.67, Median = 84, Range = 55

Friday 17 August 2012

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Simplify: √363

    Answer: 11√3
  2. 2. Algebra

    Complete the square: 3x² + 12x + 9

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

    Find area of triangle: a = 30cm, b = 29cm, angle = 48°. Give your answer to 2 decimal places

    Answer: 323.27cm²
  4. 4. Ratio

    a:b is 9:4 and b:c is 3:8. Find a:b:c in its simplest form.

    Answer: 27:12:32
  5. 5. Statistics

    Find the mean, median and range of: 68, 82, 35, 98, 67, 42, 58. Give your answer to 2 decimal places

    Answer: Mean = 64.29, Median = 67, Range = 63