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Capstone Apr 25 - May 1 25 questions
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Monday 25 April 2022

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Simplify: √128

    Answer: 8√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 = 15cm, b = 26cm, angle = 78°

    Answer: 190.7cm²
  4. 4. Ratio

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

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

    Find the mean, median and range of: 60, 94, 42, 90, 46, 90, 89, 60, 100

    Answer: Mean = 74.6, Median = 89, Range = 58

Tuesday 26 April 2022

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Simplify: √192

    Answer: 8√3
  2. 2. Algebra

    Complete the square: x² + 2.8x

    Answer: (x + 1.4)² - 1.96
  3. 3. Geometry

    Find area of triangle: a = 15cm, b = 16cm, angle = 59°

    Answer: 102.9cm²
  4. 4. Ratio

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

    Answer: 2:4:8
  5. 5. Statistics

    Find the mean, median and range of: 67, 99, 68, 82, 65, 63, 19, 24

    Answer: Mean = 60.9, Median = 67, Range = 80

Wednesday 27 April 2022

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Simplify: √320

    Answer: 8√5
  2. 2. Algebra

    Complete the square: x² + 4.2x

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

    Find area of triangle: a = 30cm, b = 21cm, angle = 40°

    Answer: 202.5cm²
  4. 4. Ratio

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

    Answer: 4:6:15
  5. 5. Statistics

    Find the mean, median and range of: 92, 81, 90, 36, 24, 49, 38, 18, 63

    Answer: Mean = 54.6, Median = 49, Range = 74

Thursday 28 April 2022

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Simplify: √363

    Answer: 11√3
  2. 2. Algebra

    Complete the square: x² + 4.8x

    Answer: (x + 2.4)² - 5.76
  3. 3. Geometry

    Find area of triangle: a = 26cm, b = 30cm, angle = 56°

    Answer: 323.3cm²
  4. 4. Ratio

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

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

    Find the mean, median and range of: 36, 98, 17, 65, 31, 62, 65

    Answer: Mean = 53.4, Median = 62, Range = 81

Friday 29 April 2022

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Simplify: √162

    Answer: 9√2
  2. 2. Algebra

    Complete the square: x² + 2.2x

    Answer: (x + 1.1)² - 1.21
  3. 3. Geometry

    Find area of triangle: a = 17cm, b = 18cm, angle = 40°

    Answer: 98.3cm²
  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: 82, 93, 22, 50, 78, 14, 58, 56

    Answer: Mean = 56.6, Median = 58, Range = 79