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Capstone Jun 20 - 26 25 questions
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Monday 20 June 2011

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Simplify: √125

    Answer: 5√5
  2. 2. Algebra

    Complete the square: 3x² + 30x + 3

    Answer: 3(x + 5)² - 72
  3. 3. Geometry

    Find area of triangle: a = 17cm, b = 18cm, angle = 66°. Give your answer to 2 decimal places

    Answer: 139.77cm²
  4. 4. Ratio

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

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

    Find the mean, median and range of: 82, 65, 100, 68, 85, 66, 100, 53. Give your answer to 2 decimal places

    Answer: Mean = 77.38, Median = 75, Range = 47

Tuesday 21 June 2011

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Simplify: √810

    Answer: 9√10
  2. 2. Algebra

    Complete the square: 4x² - 8x + 12

    Answer: 4(x - 1)² + 8
  3. 3. Geometry

    Find area of triangle: a = 21cm, b = 12cm, angle = 46°. Give your answer to 2 decimal places

    Answer: 90.64cm²
  4. 4. Ratio

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

    Answer: 64:72:63
  5. 5. Statistics

    Find the mean, median and range of: 97, 60, 93, 18, 16, 78, 56, 84

    Answer: Mean = 62.75, Median = 69, Range = 81

Wednesday 22 June 2011

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Simplify: 5√176

    Answer: 20√11
  2. 2. Algebra

    Complete the square: x² - 5x + 9

    Answer: (x - 5⁄2)² + 11⁄4
  3. 3. Geometry

    Find area of triangle: a = 26cm, b = 24cm, angle = 41°. Give your answer to 2 decimal places

    Answer: 204.69cm²
  4. 4. Ratio

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

    Answer: 24:40:25
  5. 5. Statistics

    Find the mean, median and range of: 78, 51, 24, 70, 19, 18, 56. Give your answer to 2 decimal places

    Answer: Mean = 45.14, Median = 51, Range = 60

Thursday 23 June 2011

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Simplify: 5√45

    Answer: 15√5
  2. 2. Algebra

    Complete the square: 5x² - 20x + 4

    Answer: 5(x - 2)² - 16
  3. 3. Geometry

    Find area of triangle: a = 30cm, b = 24cm, angle = 45°. Give your answer to 2 decimal places

    Answer: 254.56cm²
  4. 4. Ratio

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

    Answer: 30:42:35
  5. 5. Statistics

    Find the mean, median and range of: 32, 16, 86, 26, 68, 24, 79. Give your answer to 2 decimal places

    Answer: Mean = 47.29, Median = 32, Range = 70

Friday 24 June 2011

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Simplify: √720

    Answer: 12√5
  2. 2. Algebra

    Complete the square: x² + 5x + 3

    Answer: (x + 5⁄2)² - 13⁄4
  3. 3. Geometry

    Find area of triangle: a = 28cm, b = 18cm, angle = 65°. Give your answer to 2 decimal places

    Answer: 228.39cm²
  4. 4. Ratio

    a:b is 5:3 and b:c is 7:8. Find a:b:c in its simplest form.

    Answer: 35:21:24
  5. 5. Statistics

    Find the mean, median and range of: 87, 17, 58, 74, 96, 64, 82, 33, 64. Give your answer to 2 decimal places

    Answer: Mean = 63.89, Median = 64, Range = 79