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Capstone Feb 18 - 24 25 questions
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Monday 18 February 2013

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Simplify: √176

    Answer: 4√11
  2. 2. Algebra

    Complete the square: 4x² - 32x - 1

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

    Find area of triangle: a = 28cm, b = 12cm, angle = 66°. Give your answer to 2 decimal places

    Answer: 153.48cm²
  4. 4. Ratio

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

    Answer: 6:14:49
  5. 5. Statistics

    Find the mean, median and range of: 33, 26, 62, 19, 71, 27, 31. Give your answer to 2 decimal places

    Answer: Mean = 38.43, Median = 31, Range = 52

Tuesday 19 February 2013

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Simplify: √384

    Answer: 8√6
  2. 2. Algebra

    Complete the square: 3x² - 24x + 15

    Answer: 3(x - 4)² - 33
  3. 3. Geometry

    Find area of triangle: a = 29cm, b = 12cm, angle = 68°. Give your answer to 2 decimal places

    Answer: 161.33cm²
  4. 4. Ratio

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

    Answer: 35:28:20
  5. 5. Statistics

    Find the mean, median and range of: 67, 59, 51, 95, 39, 42, 65. Give your answer to 2 decimal places

    Answer: Mean = 59.71, Median = 59, Range = 56

Wednesday 20 February 2013

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Simplify: 5√63

    Answer: 15√7
  2. 2. Algebra

    Complete the square: 2x² - 12x + 1

    Answer: 2(x - 3)² - 17
  3. 3. Geometry

    Find area of triangle: a = 14cm, b = 23cm, angle = 52°. Give your answer to 2 decimal places

    Answer: 126.87cm²
  4. 4. Ratio

    a:b is 6:5 and b:c is 7:5. Find a:b:c in its simplest form.

    Answer: 42:35:25
  5. 5. Statistics

    Find the mean, median and range of: 77, 66, 53, 81, 48, 77, 10, 62, 96. Give your answer to 2 decimal places

    Answer: Mean = 63.33, Median = 66, Range = 86

Thursday 21 February 2013

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Simplify: √891

    Answer: 9√11
  2. 2. Algebra

    Complete the square: x² + x + 10

    Answer: (x + 1⁄2)² + 39⁄4
  3. 3. Geometry

    Find area of triangle: a = 12cm, b = 13cm, angle = 50°. Give your answer to 2 decimal places

    Answer: 59.75cm²
  4. 4. Ratio

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

    Answer: 40:45:72
  5. 5. Statistics

    Find the mean, median and range of: 84, 98, 67, 32, 79, 96, 59. Give your answer to 2 decimal places

    Answer: Mean = 73.57, Median = 79, Range = 66

Friday 22 February 2013

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Simplify: √425

    Answer: 5√17
  2. 2. Algebra

    Complete the square: x² - 7x + 1

    Answer: (x - 7⁄2)² - 45⁄4
  3. 3. Geometry

    Find area of triangle: a = 25cm, b = 28cm, angle = 44°. Give your answer to 2 decimal places

    Answer: 243.13cm²
  4. 4. Ratio

    a:b is 5:6 and b:c is 7:8. Find a:b:c in its simplest form.

    Answer: 35:42:48
  5. 5. Statistics

    Find the mean, median and range of: 77, 15, 68, 79, 69, 93, 74. Give your answer to 2 decimal places

    Answer: Mean = 67.86, Median = 74, Range = 78