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Capstone Apr 4 - 10 25 questions
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Monday 4 April 2011

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Simplify: √891

    Answer: 9√11
  2. 2. Algebra

    Complete the square: 3x² + 30x + 15

    Answer: 3(x + 5)² - 60
  3. 3. Geometry

    Find area of triangle: a = 28cm, b = 27cm, angle = 52°. Give your answer to 2 decimal places

    Answer: 297.87cm²
  4. 4. Ratio

    a:b is 9:7 and b:c is 3:7. Find a:b:c in its simplest form.

    Answer: 27:21:49
  5. 5. Statistics

    Find the mean, median and range of: 65, 62, 19, 62, 57, 47, 78, 38, 56. Give your answer to 2 decimal places

    Answer: Mean = 53.78, Median = 57, Range = 59

Tuesday 5 April 2011

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Simplify: √640

    Answer: 8√10
  2. 2. Algebra

    Complete the square: x² + 5x - 1

    Answer: (x + 5⁄2)² - 29⁄4
  3. 3. Geometry

    Find area of triangle: a = 24cm, b = 23cm, angle = 62°. Give your answer to 2 decimal places

    Answer: 243.69cm²
  4. 4. Ratio

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

    Answer: 16:28:7
  5. 5. Statistics

    Find the mean, median and range of: 19, 53, 56, 81, 18, 11, 88, 36

    Answer: Mean = 45.25, Median = 44.5, Range = 77

Wednesday 6 April 2011

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Simplify: 4√176

    Answer: 16√11
  2. 2. Algebra

    Complete the square: x² - 9x + 6

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

    Find area of triangle: a = 23cm, b = 14cm, angle = 58°. Give your answer to 2 decimal places

    Answer: 136.54cm²
  4. 4. Ratio

    a:b is 4:9 and b:c is 6:1. Find a:b:c in its simplest form.

    Answer: 8:18:3
  5. 5. Statistics

    Find the mean, median and range of: 37, 73, 72, 33, 79, 44, 18, 60

    Answer: Mean = 52, Median = 52, Range = 61

Thursday 7 April 2011

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Simplify: √336

    Answer: 4√21
  2. 2. Algebra

    Complete the square: 5x² + 40x

    Answer: 5(x + 4)² - 80
  3. 3. Geometry

    Find area of triangle: a = 17cm, b = 30cm, angle = 66°. Give your answer to 2 decimal places

    Answer: 232.95cm²
  4. 4. Ratio

    a:b is 3:8 and b:c is 9:1. Find a:b:c in its simplest form.

    Answer: 27:72:8
  5. 5. Statistics

    Find the mean, median and range of: 70, 24, 55, 90, 36, 36, 84. Give your answer to 2 decimal places

    Answer: Mean = 56.43, Median = 55, Range = 66

Friday 8 April 2011

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Simplify: √325

    Answer: 5√13
  2. 2. Algebra

    Complete the square: 4x² - 8x - 10

    Answer: 4(x - 1)² - 14
  3. 3. Geometry

    Find area of triangle: a = 18cm, b = 24cm, angle = 45°. Give your answer to 2 decimal places

    Answer: 152.74cm²
  4. 4. Ratio

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

    Answer: 45:18:4
  5. 5. Statistics

    Find the mean, median and range of: 15, 92, 42, 84, 80, 90, 41, 13, 97. Give your answer to 2 decimal places

    Answer: Mean = 61.56, Median = 80, Range = 84