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Capstone Dec 26 - Jan 1 25 questions
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Monday 26 December 2011

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Simplify: √216

    Answer: 6√6
  2. 2. Algebra

    Complete the square: 5x² - 40x + 5

    Answer: 5(x - 4)² - 75
  3. 3. Geometry

    Find area of triangle: a = 29cm, b = 21cm, angle = 79°. Give your answer to 2 decimal places

    Answer: 298.91cm²
  4. 4. Ratio

    a:b is 2:9 and b:c is 5:4. Find a:b:c in its simplest form.

    Answer: 10:45:36
  5. 5. Statistics

    Find the mean, median and range of: 97, 76, 87, 80, 11, 25, 83, 48. Give your answer to 2 decimal places

    Answer: Mean = 63.38, Median = 78, Range = 86

Tuesday 27 December 2011

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Simplify: 2√50

    Answer: 10√2
  2. 2. Algebra

    Complete the square: x² + 11x - 5

    Answer: (x + 11⁄2)² - 141⁄4
  3. 3. Geometry

    Find area of triangle: a = 30cm, b = 16cm, angle = 43°. Give your answer to 2 decimal places

    Answer: 163.68cm²
  4. 4. Ratio

    a:b is 8:3 and b:c is 5:6. Find a:b:c in its simplest form.

    Answer: 40:15:18
  5. 5. Statistics

    Find the mean, median and range of: 37, 46, 13, 42, 82, 23, 96, 64, 30. Give your answer to 2 decimal places

    Answer: Mean = 48.11, Median = 42, Range = 83

Wednesday 28 December 2011

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Simplify: 3√48

    Answer: 12√3
  2. 2. Algebra

    Complete the square: x² + 7x - 4

    Answer: (x + 7⁄2)² - 65⁄4
  3. 3. Geometry

    Find area of triangle: a = 28cm, b = 13cm, angle = 40°. Give your answer to 2 decimal places

    Answer: 116.99cm²
  4. 4. Ratio

    a:b is 7:6 and b:c is 8:3. Find a:b:c in its simplest form.

    Answer: 28:24:9
  5. 5. Statistics

    Find the mean, median and range of: 21, 26, 56, 41, 63, 35, 97, 49, 31. Give your answer to 2 decimal places

    Answer: Mean = 46.56, Median = 41, Range = 76

Thursday 29 December 2011

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Simplify: √192

    Answer: 8√3
  2. 2. Algebra

    Complete the square: x² + 11x + 10

    Answer: (x + 11⁄2)² - 81⁄4
  3. 3. Geometry

    Find area of triangle: a = 19cm, b = 21cm, angle = 55°. Give your answer to 2 decimal places

    Answer: 163.42cm²
  4. 4. Ratio

    a:b is 9:8 and b:c is 3:7. Find a:b:c in its simplest form.

    Answer: 27:24:56
  5. 5. Statistics

    Find the mean, median and range of: 94, 12, 94, 38, 65, 14, 95. Give your answer to 2 decimal places

    Answer: Mean = 58.86, Median = 65, Range = 83

Friday 30 December 2011

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Simplify: √396

    Answer: 6√11
  2. 2. Algebra

    Complete the square: 3x² + 24x - 9

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

    Find area of triangle: a = 28cm, b = 17cm, angle = 63°. Give your answer to 2 decimal places

    Answer: 212.06cm²
  4. 4. Ratio

    a:b is 7:8 and b:c is 9:1. Find a:b:c in its simplest form.

    Answer: 63:72:8
  5. 5. Statistics

    Find the mean, median and range of: 75, 28, 61, 53, 16, 49, 42, 49, 44. Give your answer to 2 decimal places

    Answer: Mean = 46.33, Median = 49, Range = 59