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Capstone Sep 2 - 8 25 questions
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Monday 2 September 2019

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Simplify: √162

    Answer: 9√2
  2. 2. Algebra

    Complete the square: x² + 5.4x

    Answer: (x + 2.7)² - 7.29
  3. 3. Geometry

    Find area of triangle: a = 30cm, b = 18cm, angle = 75°

    Answer: 260.8cm²
  4. 4. Ratio

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

    Answer: 12:6:10
  5. 5. Statistics

    Find the mean, median and range of: 60, 69, 63, 57, 67, 60, 18

    Answer: Mean = 56.3, Median = 60, Range = 51

Tuesday 3 September 2019

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Simplify: √147

    Answer: 7√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 = 17cm, b = 15cm, angle = 52°

    Answer: 100.5cm²
  4. 4. Ratio

    a:b is 3:2 and b:c is 4:5. Find a:b:c.

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

    Find the mean, median and range of: 80, 16, 91, 77, 67, 32, 16, 25

    Answer: Mean = 50.5, Median = 67, Range = 75

Wednesday 4 September 2019

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Simplify: √192

    Answer: 8√3
  2. 2. Algebra

    Complete the square: x² + 3x

    Answer: (x + 1.5)² - 2.25
  3. 3. Geometry

    Find area of triangle: a = 25cm, b = 24cm, angle = 53°

    Answer: 239.6cm²
  4. 4. Ratio

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

    Answer: 8:6:9
  5. 5. Statistics

    Find the mean, median and range of: 73, 15, 54, 98, 63, 14, 26, 15, 32

    Answer: Mean = 43.3, Median = 32, Range = 84

Thursday 5 September 2019

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Simplify: √200

    Answer: 10√2
  2. 2. Algebra

    Complete the square: x² + 4.4x

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

    Find area of triangle: a = 23cm, b = 14cm, angle = 66°

    Answer: 147.cm²
  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: 81, 17, 66, 23, 80, 60, 96, 70

    Answer: Mean = 61.6, Median = 70, Range = 79

Friday 6 September 2019

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Simplify: √108

    Answer: 6√3
  2. 2. Algebra

    Complete the square: x² + 3.2x

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

    Find area of triangle: a = 15cm, b = 12cm, angle = 68°

    Answer: 83.4cm²
  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: 89, 60, 17, 80, 59, 59, 30, 52, 96

    Answer: Mean = 60.2, Median = 59, Range = 79