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Capstone Mar 16 - 22 25 questions
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Monday 16 March 2015

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Simplify: √275

    Answer: 5√11
  2. 2. Algebra

    Complete the square: x² - 11x + 4

    Answer: (x - 11⁄2)² - 105⁄4
  3. 3. Geometry

    Find area of triangle: a = 22cm, b = 27cm, angle = 46°. Give your answer to 2 decimal places

    Answer: 213.64cm²
  4. 4. Ratio

    a:b is 6:5 and b:c is 2:3. Find a:b:c in its simplest form.

    Answer: 12:10:15
  5. 5. Statistics

    Find the mean, median and range of: 13, 35, 95, 35, 93, 10, 37, 72, 71. Give your answer to 2 decimal places

    Answer: Mean = 51.22, Median = 37, Range = 85

Tuesday 17 March 2015

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Simplify: 3√40

    Answer: 6√10
  2. 2. Algebra

    Complete the square: x² + 3x + 5

    Answer: (x + 3⁄2)² + 11⁄4
  3. 3. Geometry

    Find area of triangle: a = 25cm, b = 21cm, angle = 64°. Give your answer to 2 decimal places

    Answer: 235.93cm²
  4. 4. Ratio

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

    Answer: 25:20:16
  5. 5. Statistics

    Find the mean, median and range of: 62, 52, 36, 71, 59, 62, 55, 21

    Answer: Mean = 52.25, Median = 57, Range = 50

Wednesday 18 March 2015

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Simplify: √810

    Answer: 9√10
  2. 2. Algebra

    Complete the square: x² - 11x - 4

    Answer: (x - 11⁄2)² - 137⁄4
  3. 3. Geometry

    Find area of triangle: a = 29cm, b = 20cm, angle = 76°. Give your answer to 2 decimal places

    Answer: 281.39cm²
  4. 4. Ratio

    a:b is 8:7 and b:c is 3:2. Find a:b:c in its simplest form.

    Answer: 24:21:14
  5. 5. Statistics

    Find the mean, median and range of: 25, 79, 93, 13, 39, 22, 24. Give your answer to 2 decimal places

    Answer: Mean = 42.14, Median = 25, Range = 80

Thursday 19 March 2015

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Simplify: √128

    Answer: 8√2
  2. 2. Algebra

    Complete the square: 5x² - 60x + 11

    Answer: 5(x - 6)² - 169
  3. 3. Geometry

    Find area of triangle: a = 12cm, b = 30cm, angle = 69°. Give your answer to 2 decimal places

    Answer: 168.04cm²
  4. 4. Ratio

    a:b is 1:5 and b:c is 3:8. Find a:b:c in its simplest form.

    Answer: 3:15:40
  5. 5. Statistics

    Find the mean, median and range of: 22, 77, 91, 67, 76, 88, 49. Give your answer to 2 decimal places

    Answer: Mean = 67.14, Median = 76, Range = 69

Friday 20 March 2015

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Simplify: √48

    Answer: 4√3
  2. 2. Algebra

    Complete the square: 3x² + 18x + 12

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

    Find area of triangle: a = 23cm, b = 21cm, angle = 79°. Give your answer to 2 decimal places

    Answer: 237.06cm²
  4. 4. Ratio

    a:b is 1:4 and b:c is 3:8. Find a:b:c in its simplest form.

    Answer: 3:12:32
  5. 5. Statistics

    Find the mean, median and range of: 88, 52, 28, 62, 20, 64, 44, 70, 91. Give your answer to 2 decimal places

    Answer: Mean = 57.67, Median = 62, Range = 71