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Capstone Mar 26 - Apr 1 25 questions
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Monday 26 March 2018

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Simplify: √147

    Answer: 7√3
  2. 2. Algebra

    Complete the square: x² + 4.4x

    Answer: (x + 2.2)² - 4.84
  3. 3. Geometry

    Find area of triangle: a = 22cm, b = 23cm, angle = 68°

    Answer: 234.6cm²
  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: 47, 63, 86, 33, 20, 23, 22, 90, 54

    Answer: Mean = 48.7, Median = 47, Range = 70

Tuesday 27 March 2018

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Simplify: √320

    Answer: 8√5
  2. 2. Algebra

    Complete the square: x² + 3.8x

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

    Find area of triangle: a = 21cm, b = 25cm, angle = 66°

    Answer: 239.8cm²
  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: 91, 91, 35, 19, 50, 45, 28, 88

    Answer: Mean = 55.9, Median = 50, Range = 72

Wednesday 28 March 2018

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Simplify: √288

    Answer: 12√2
  2. 2. Algebra

    Complete the square: x² + 4.8x

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

    Find area of triangle: a = 23cm, b = 13cm, angle = 45°

    Answer: 105.7cm²
  4. 4. Ratio

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

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

    Find the mean, median and range of: 24, 98, 97, 53, 52, 44, 87

    Answer: Mean = 65, Median = 53, Range = 74

Thursday 29 March 2018

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Simplify: √98

    Answer: 7√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 = 30cm, b = 25cm, angle = 62°

    Answer: 331.cm²
  4. 4. Ratio

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

    Answer: 9:6:10
  5. 5. Statistics

    Find the mean, median and range of: 86, 36, 82, 59, 24, 60, 58, 87

    Answer: Mean = 61.5, Median = 60, Range = 63

Friday 30 March 2018

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Simplify: √200

    Answer: 10√2
  2. 2. Algebra

    Complete the square: x² + 3.2x

    Answer: (x + 1.6)² - 2.56
  3. 3. Geometry

    Find area of triangle: a = 14cm, b = 23cm, angle = 46°

    Answer: 115.8cm²
  4. 4. Ratio

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

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

    Find the mean, median and range of: 87, 76, 73, 44, 53, 38, 23

    Answer: Mean = 56.3, Median = 53, Range = 64