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Capstone Apr 27 - May 3 25 questions
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Monday 27 April 2020

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Simplify: √128

    Answer: 8√2
  2. 2. Algebra

    Complete the square: x² + 4.2x

    Answer: (x + 2.1)² - 4.41
  3. 3. Geometry

    Find area of triangle: a = 21cm, b = 13cm, angle = 48°

    Answer: 101.4cm²
  4. 4. Ratio

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

    Answer: 16:12:18
  5. 5. Statistics

    Find the mean, median and range of: 52, 12, 53, 36, 88, 50, 99, 34

    Answer: Mean = 53, Median = 52, Range = 87

Tuesday 28 April 2020

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Simplify: √363

    Answer: 11√3
  2. 2. Algebra

    Complete the square: x² + 4.6x

    Answer: (x + 2.3)² - 5.29
  3. 3. Geometry

    Find area of triangle: a = 20cm, b = 12cm, angle = 71°

    Answer: 113.5cm²
  4. 4. Ratio

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

    Answer: 3:2:6
  5. 5. Statistics

    Find the mean, median and range of: 51, 66, 25, 50, 39, 71, 11, 89

    Answer: Mean = 50.3, Median = 51, Range = 78

Wednesday 29 April 2020

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Simplify: √192

    Answer: 8√3
  2. 2. Algebra

    Complete the square: x² + 5.2x

    Answer: (x + 2.6)² - 6.76
  3. 3. Geometry

    Find area of triangle: a = 23cm, b = 29cm, angle = 61°

    Answer: 291.7cm²
  4. 4. Ratio

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

    Answer: 9:12:24
  5. 5. Statistics

    Find the mean, median and range of: 50, 88, 13, 72, 21, 61, 79

    Answer: Mean = 54.9, Median = 61, Range = 75

Thursday 30 April 2020

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Simplify: √200

    Answer: 10√2
  2. 2. Algebra

    Complete the square: x² + 5.6x

    Answer: (x + 2.8)² - 7.84
  3. 3. Geometry

    Find area of triangle: a = 16cm, b = 29cm, angle = 55°

    Answer: 190cm²
  4. 4. Ratio

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

    Answer: 3:2:5
  5. 5. Statistics

    Find the mean, median and range of: 80, 94, 38, 87, 68, 96, 19, 63, 95

    Answer: Mean = 71.1, Median = 80, Range = 77

Friday 1 May 2020

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Simplify: √320

    Answer: 8√5
  2. 2. Algebra

    Complete the square: x² + 5.8x

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

    Find area of triangle: a = 25cm, b = 20cm, angle = 50°

    Answer: 191.5cm²
  4. 4. Ratio

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

    Answer: 2:3:4
  5. 5. Statistics

    Find the mean, median and range of: 62, 36, 27, 54, 38, 70, 24, 17

    Answer: Mean = 41, Median = 38, Range = 53