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Capstone Jun 24 - 30 25 questions
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Monday 24 June 2019

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Simplify: √75

    Answer: 5√3
  2. 2. Algebra

    Complete the square: x² + 4x

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

    Find area of triangle: a = 20cm, b = 25cm, angle = 52°

    Answer: 197cm²
  4. 4. Ratio

    a:b is 3:4 and b:c is 3:4. Find a:b:c.

    Answer: 9:12:16
  5. 5. Statistics

    Find the mean, median and range of: 96, 89, 12, 75, 40, 58, 30, 75, 54

    Answer: Mean = 58.8, Median = 58, Range = 84

Tuesday 25 June 2019

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Simplify: √98

    Answer: 7√2
  2. 2. Algebra

    Complete the square: x² + 5.8x

    Answer: (x + 2.9)² - 8.41
  3. 3. Geometry

    Find area of triangle: a = 21cm, b = 22cm, angle = 57°

    Answer: 193.7cm²
  4. 4. Ratio

    a:b is 4:3 and b:c is 1:2. Find a:b:c.

    Answer: 4:3:6
  5. 5. Statistics

    Find the mean, median and range of: 14, 46, 13, 98, 99, 68, 79, 88

    Answer: Mean = 63.1, Median = 79, Range = 86

Wednesday 26 June 2019

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Simplify: √200

    Answer: 10√2
  2. 2. Algebra

    Complete the square: x² + 3.8x

    Answer: (x + 1.9)² - 3.61
  3. 3. Geometry

    Find area of triangle: a = 17cm, b = 26cm, angle = 50°

    Answer: 169.3cm²
  4. 4. Ratio

    a:b is 1:2 and b:c is 3:4. Find a:b:c.

    Answer: 6:12:16
  5. 5. Statistics

    Find the mean, median and range of: 38, 53, 40, 38, 44, 15, 23, 79, 48

    Answer: Mean = 42, Median = 40, Range = 64

Thursday 27 June 2019

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Simplify: √242

    Answer: 11√2
  2. 2. Algebra

    Complete the square: x² + 5x

    Answer: (x + 2.5)² - 6.25
  3. 3. Geometry

    Find area of triangle: a = 27cm, b = 25cm, angle = 65°

    Answer: 305.9cm²
  4. 4. Ratio

    a:b is 4:3 and b:c is 4:3. Find a:b:c.

    Answer: 16:12:9
  5. 5. Statistics

    Find the mean, median and range of: 69, 44, 71, 66, 13, 20, 53, 43, 37

    Answer: Mean = 46.2, Median = 44, Range = 58

Friday 28 June 2019

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Simplify: √128

    Answer: 8√2
  2. 2. Algebra

    Complete the square: x² + 2.6x

    Answer: (x + 1.3)² - 1.69
  3. 3. Geometry

    Find area of triangle: a = 21cm, b = 15cm, angle = 60°

    Answer: 136.4cm²
  4. 4. Ratio

    a:b is 1:2 and b:c is 3:5. Find a:b:c.

    Answer: 6:12:20
  5. 5. Statistics

    Find the mean, median and range of: 72, 96, 70, 54, 11, 10, 74

    Answer: Mean = 55.3, Median = 70, Range = 86