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Capstone Mar 14 - 20 25 questions
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Monday 14 March 2011

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Simplify: √216

    Answer: 6√6
  2. 2. Algebra

    Complete the square: 2x² + 16x + 14

    Answer: 2(x + 4)² - 18
  3. 3. Geometry

    Find area of triangle: a = 18cm, b = 18cm, angle = 64°. Give your answer to 2 decimal places

    Answer: 145.6cm²
  4. 4. Ratio

    a:b is 1:7 and b:c is 8:5. Find a:b:c in its simplest form.

    Answer: 8:56:35
  5. 5. Statistics

    Find the mean, median and range of: 86, 18, 50, 41, 81, 46, 89, 97

    Answer: Mean = 63.5, Median = 65.5, Range = 79

Tuesday 15 March 2011

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Simplify: √490

    Answer: 7√10
  2. 2. Algebra

    Complete the square: 5x² + 40x + 14

    Answer: 5(x + 4)² - 66
  3. 3. Geometry

    Find area of triangle: a = 12cm, b = 14cm, angle = 75°. Give your answer to 2 decimal places

    Answer: 81.14cm²
  4. 4. Ratio

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

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

    Find the mean, median and range of: 17, 88, 97, 81, 72, 100, 37, 10, 73. Give your answer to 2 decimal places

    Answer: Mean = 63.89, Median = 73, Range = 90

Wednesday 16 March 2011

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Simplify: √192

    Answer: 8√3
  2. 2. Algebra

    Complete the square: 3x² + 12x + 11

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

    Find area of triangle: a = 22cm, b = 24cm, angle = 55°. Give your answer to 2 decimal places

    Answer: 216.26cm²
  4. 4. Ratio

    a:b is 9:8 and b:c is 6:1. Find a:b:c in its simplest form.

    Answer: 27:24:4
  5. 5. Statistics

    Find the mean, median and range of: 37, 85, 71, 50, 67, 17, 85, 64

    Answer: Mean = 59.5, Median = 65.5, Range = 68

Thursday 17 March 2011

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Simplify: 4√20

    Answer: 8√5
  2. 2. Algebra

    Complete the square: x² - 7x + 7

    Answer: (x - 7⁄2)² - 21⁄4
  3. 3. Geometry

    Find area of triangle: a = 18cm, b = 23cm, angle = 41°. Give your answer to 2 decimal places

    Answer: 135.8cm²
  4. 4. Ratio

    a:b is 5:4 and b:c is 9:7. Find a:b:c in its simplest form.

    Answer: 45:36:28
  5. 5. Statistics

    Find the mean, median and range of: 26, 34, 27, 48, 90, 89, 53, 49, 98. Give your answer to 2 decimal places

    Answer: Mean = 57.11, Median = 49, Range = 72

Friday 18 March 2011

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Simplify: √180

    Answer: 6√5
  2. 2. Algebra

    Complete the square: 2x² - 8x + 2

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

    Find area of triangle: a = 22cm, b = 30cm, angle = 69°. Give your answer to 2 decimal places

    Answer: 308.08cm²
  4. 4. Ratio

    a:b is 6:7 and b:c is 4:7. Find a:b:c in its simplest form.

    Answer: 24:28:49
  5. 5. Statistics

    Find the mean, median and range of: 95, 74, 56, 97, 82, 89, 79, 63, 87. Give your answer to 2 decimal places

    Answer: Mean = 80.22, Median = 82, Range = 41