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Capstone Jul 17 - 23 25 questions
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Monday 17 July 2017

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Simplify: 2√125

    Answer: 10√5
  2. 2. Algebra

    Complete the square: x² - 7x + 3

    Answer: (x - 7⁄2)² - 37⁄4
  3. 3. Geometry

    Find area of triangle: a = 22cm, b = 26cm, angle = 46°. Give your answer to 2 decimal places

    Answer: 205.73cm²
  4. 4. Ratio

    a:b is 5:2 and b:c is 5:1. Find a:b:c in its simplest form.

    Answer: 25:10:2
  5. 5. Statistics

    Find the mean, median and range of: 43, 28, 91, 86, 12, 56, 75. Give your answer to 2 decimal places

    Answer: Mean = 55.86, Median = 56, Range = 79

Tuesday 18 July 2017

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Simplify: 2√80

    Answer: 8√5
  2. 2. Algebra

    Complete the square: 4x² + 16x - 9

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

    Find area of triangle: a = 22cm, b = 17cm, angle = 59°. Give your answer to 2 decimal places

    Answer: 160.29cm²
  4. 4. Ratio

    a:b is 8:3 and b:c is 7:9. Find a:b:c in its simplest form.

    Answer: 56:21:27
  5. 5. Statistics

    Find the mean, median and range of: 98, 45, 65, 54, 66, 48, 73, 11

    Answer: Mean = 57.5, Median = 59.5, Range = 87

Wednesday 19 July 2017

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Simplify: √325

    Answer: 5√13
  2. 2. Algebra

    Complete the square: 5x² + 10x - 12

    Answer: 5(x + 1)² - 17
  3. 3. Geometry

    Find area of triangle: a = 18cm, b = 27cm, angle = 49°. Give your answer to 2 decimal places

    Answer: 183.39cm²
  4. 4. Ratio

    a:b is 1:4 and b:c is 5:3. Find a:b:c in its simplest form.

    Answer: 5:20:12
  5. 5. Statistics

    Find the mean, median and range of: 58, 67, 50, 19, 77, 95, 84, 16, 28. Give your answer to 2 decimal places

    Answer: Mean = 54.89, Median = 58, Range = 79

Thursday 20 July 2017

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Simplify: 5√63

    Answer: 15√7
  2. 2. Algebra

    Complete the square: 2x² + 4x - 6

    Answer: 2(x + 1)² - 8
  3. 3. Geometry

    Find area of triangle: a = 28cm, b = 30cm, angle = 41°. Give your answer to 2 decimal places

    Answer: 275.54cm²
  4. 4. Ratio

    a:b is 1:8 and b:c is 7:5. Find a:b:c in its simplest form.

    Answer: 7:56:40
  5. 5. Statistics

    Find the mean, median and range of: 22, 66, 93, 89, 17, 33, 88, 30

    Answer: Mean = 54.75, Median = 49.5, Range = 76

Friday 21 July 2017

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Simplify: √550

    Answer: 5√22
  2. 2. Algebra

    Complete the square: 5x² - 40x + 8

    Answer: 5(x - 4)² - 72
  3. 3. Geometry

    Find area of triangle: a = 16cm, b = 14cm, angle = 57°. Give your answer to 2 decimal places

    Answer: 93.93cm²
  4. 4. Ratio

    a:b is 3:8 and b:c is 6:1. Find a:b:c in its simplest form.

    Answer: 9:24:4
  5. 5. Statistics

    Find the mean, median and range of: 68, 96, 40, 46, 64, 68, 66, 42

    Answer: Mean = 61.25, Median = 65, Range = 56