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Capstone Mar 7 - 13 25 questions
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Monday 7 March 2016

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Simplify: √540

    Answer: 6√15
  2. 2. Algebra

    Complete the square: x² + 5x + 7

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

    Find area of triangle: a = 18cm, b = 16cm, angle = 42°. Give your answer to 2 decimal places

    Answer: 96.35cm²
  4. 4. Ratio

    a:b is 3:5 and b:c is 9:7. Find a:b:c in its simplest form.

    Answer: 27:45:35
  5. 5. Statistics

    Find the mean, median and range of: 34, 33, 41, 100, 74, 42, 85, 62, 20. Give your answer to 2 decimal places

    Answer: Mean = 54.56, Median = 42, Range = 80

Tuesday 8 March 2016

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Simplify: √336

    Answer: 4√21
  2. 2. Algebra

    Complete the square: 3x² + 18x + 12

    Answer: 3(x + 3)² - 15
  3. 3. Geometry

    Find area of triangle: a = 18cm, b = 15cm, angle = 71°. Give your answer to 2 decimal places

    Answer: 127.65cm²
  4. 4. Ratio

    a:b is 4:7 and b:c is 2:5. Find a:b:c in its simplest form.

    Answer: 8:14:35
  5. 5. Statistics

    Find the mean, median and range of: 80, 91, 99, 95, 54, 40, 38, 47

    Answer: Mean = 68, Median = 67, Range = 61

Wednesday 9 March 2016

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Simplify: √242

    Answer: 11√2
  2. 2. Algebra

    Complete the square: 2x² + 8x + 4

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

    Find area of triangle: a = 19cm, b = 28cm, angle = 56°. Give your answer to 2 decimal places

    Answer: 220.52cm²
  4. 4. Ratio

    a:b is 6:5 and b:c is 2:9. Find a:b:c in its simplest form.

    Answer: 12:10:45
  5. 5. Statistics

    Find the mean, median and range of: 76, 82, 36, 15, 80, 14, 40, 63

    Answer: Mean = 50.75, Median = 51.5, Range = 68

Thursday 10 March 2016

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Simplify: 3√63

    Answer: 9√7
  2. 2. Algebra

    Complete the square: 5x² - 30x - 9

    Answer: 5(x - 3)² - 54
  3. 3. Geometry

    Find area of triangle: a = 20cm, b = 17cm, angle = 53°. Give your answer to 2 decimal places

    Answer: 135.77cm²
  4. 4. Ratio

    a:b is 6:5 and b:c is 7:2. Find a:b:c in its simplest form.

    Answer: 42:35:10
  5. 5. Statistics

    Find the mean, median and range of: 39, 77, 18, 10, 39, 13, 31, 41

    Answer: Mean = 33.5, Median = 35, Range = 67

Friday 11 March 2016

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Simplify: √240

    Answer: 4√15
  2. 2. Algebra

    Complete the square: x² - 9x + 4

    Answer: (x - 9⁄2)² - 65⁄4
  3. 3. Geometry

    Find area of triangle: a = 20cm, b = 12cm, angle = 66°. Give your answer to 2 decimal places

    Answer: 109.63cm²
  4. 4. Ratio

    a:b is 5:8 and b:c is 3:7. Find a:b:c in its simplest form.

    Answer: 15:24:56
  5. 5. Statistics

    Find the mean, median and range of: 56, 86, 71, 60, 97, 52, 21, 44, 18. Give your answer to 2 decimal places

    Answer: Mean = 56.11, Median = 56, Range = 79