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Capstone Oct 5 - 11 25 questions
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Monday 5 October 2015

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Simplify: √320

    Answer: 8√5
  2. 2. Algebra

    Complete the square: 2x² - 16x + 7

    Answer: 2(x - 4)² - 25
  3. 3. Geometry

    Find area of triangle: a = 27cm, b = 20cm, angle = 54°. Give your answer to 2 decimal places

    Answer: 218.43cm²
  4. 4. Ratio

    a:b is 3:2 and b:c is 3:5. Find a:b:c in its simplest form.

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

    Find the mean, median and range of: 79, 74, 89, 82, 89, 47, 66, 76

    Answer: Mean = 75.25, Median = 77.5, Range = 42

Tuesday 6 October 2015

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Simplify: √352

    Answer: 4√22
  2. 2. Algebra

    Complete the square: 2x² + 8x + 12

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

    Find area of triangle: a = 21cm, b = 15cm, angle = 57°. Give your answer to 2 decimal places

    Answer: 132.09cm²
  4. 4. Ratio

    a:b is 9:5 and b:c is 8:7. Find a:b:c in its simplest form.

    Answer: 72:40:35
  5. 5. Statistics

    Find the mean, median and range of: 89, 42, 40, 19, 45, 67, 100, 29. Give your answer to 2 decimal places

    Answer: Mean = 53.88, Median = 43.5, Range = 81

Wednesday 7 October 2015

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Simplify: 5√275

    Answer: 25√11
  2. 2. Algebra

    Complete the square: 5x² + 40x - 13

    Answer: 5(x + 4)² - 93
  3. 3. Geometry

    Find area of triangle: a = 24cm, b = 26cm, angle = 69°. Give your answer to 2 decimal places

    Answer: 291.28cm²
  4. 4. Ratio

    a:b is 7:4 and b:c is 6:7. Find a:b:c in its simplest form.

    Answer: 21:12:14
  5. 5. Statistics

    Find the mean, median and range of: 81, 58, 94, 92, 93, 95, 55. Give your answer to 2 decimal places

    Answer: Mean = 81.14, Median = 92, Range = 40

Thursday 8 October 2015

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Simplify: √896

    Answer: 8√14
  2. 2. Algebra

    Complete the square: 2x² - 24x - 10

    Answer: 2(x - 6)² - 82
  3. 3. Geometry

    Find area of triangle: a = 15cm, b = 15cm, angle = 46°. Give your answer to 2 decimal places

    Answer: 80.93cm²
  4. 4. Ratio

    a:b is 7:9 and b:c is 7:5. Find a:b:c in its simplest form.

    Answer: 49:63:45
  5. 5. Statistics

    Find the mean, median and range of: 47, 29, 37, 80, 74, 36, 83, 90, 17. Give your answer to 2 decimal places

    Answer: Mean = 54.78, Median = 47, Range = 73

Friday 9 October 2015

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Simplify: 2√75

    Answer: 10√3
  2. 2. Algebra

    Complete the square: 4x² - 40x - 15

    Answer: 4(x - 5)² - 115
  3. 3. Geometry

    Find area of triangle: a = 18cm, b = 27cm, angle = 76°. Give your answer to 2 decimal places

    Answer: 235.78cm²
  4. 4. Ratio

    a:b is 5:9 and b:c is 5:2. Find a:b:c in its simplest form.

    Answer: 25:45:18
  5. 5. Statistics

    Find the mean, median and range of: 48, 24, 46, 19, 45, 44, 95, 58. Give your answer to 2 decimal places

    Answer: Mean = 47.38, Median = 45.5, Range = 76