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Capstone Apr 16 - 22 25 questions
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Monday 16 April 2012

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Simplify: √125

    Answer: 5√5
  2. 2. Algebra

    Complete the square: 4x² - 16x - 7

    Answer: 4(x - 2)² - 23
  3. 3. Geometry

    Find area of triangle: a = 28cm, b = 23cm, angle = 48°. Give your answer to 2 decimal places

    Answer: 239.29cm²
  4. 4. Ratio

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

    Answer: 56:40:15
  5. 5. Statistics

    Find the mean, median and range of: 62, 10, 43, 47, 41, 47, 35, 51, 73. Give your answer to 2 decimal places

    Answer: Mean = 45.44, Median = 47, Range = 63

Tuesday 17 April 2012

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Simplify: 2√40

    Answer: 4√10
  2. 2. Algebra

    Complete the square: 2x² + 4x - 8

    Answer: 2(x + 1)² - 10
  3. 3. Geometry

    Find area of triangle: a = 12cm, b = 21cm, angle = 46°. Give your answer to 2 decimal places

    Answer: 90.64cm²
  4. 4. Ratio

    a:b is 9:8 and b:c is 5:6. Find a:b:c in its simplest form.

    Answer: 45:40:48
  5. 5. Statistics

    Find the mean, median and range of: 68, 30, 64, 91, 94, 36, 72, 60. Give your answer to 2 decimal places

    Answer: Mean = 64.38, Median = 66, Range = 64

Wednesday 18 April 2012

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Simplify: √160

    Answer: 4√10
  2. 2. Algebra

    Complete the square: 3x² + 30x + 4

    Answer: 3(x + 5)² - 71
  3. 3. Geometry

    Find area of triangle: a = 18cm, b = 22cm, angle = 69°. Give your answer to 2 decimal places

    Answer: 184.85cm²
  4. 4. Ratio

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

    Answer: 35:45:72
  5. 5. Statistics

    Find the mean, median and range of: 10, 53, 65, 82, 20, 66, 81. Give your answer to 2 decimal places

    Answer: Mean = 53.86, Median = 65, Range = 72

Thursday 19 April 2012

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Simplify: √375

    Answer: 5√15
  2. 2. Algebra

    Complete the square: 3x² + 30x + 6

    Answer: 3(x + 5)² - 69
  3. 3. Geometry

    Find area of triangle: a = 21cm, b = 24cm, angle = 78°. Give your answer to 2 decimal places

    Answer: 246.49cm²
  4. 4. Ratio

    a:b is 7:9 and b:c is 4:9. Find a:b:c in its simplest form.

    Answer: 28:36:81
  5. 5. Statistics

    Find the mean, median and range of: 78, 89, 93, 69, 42, 90, 19. Give your answer to 2 decimal places

    Answer: Mean = 68.57, Median = 78, Range = 74

Friday 20 April 2012

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Simplify: 4√150

    Answer: 20√6
  2. 2. Algebra

    Complete the square: 4x² + 24x + 11

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

    Find area of triangle: a = 29cm, b = 24cm, angle = 67°. Give your answer to 2 decimal places

    Answer: 320.34cm²
  4. 4. Ratio

    a:b is 5:6 and b:c is 4:3. Find a:b:c in its simplest form.

    Answer: 10:12:9
  5. 5. Statistics

    Find the mean, median and range of: 64, 83, 57, 98, 80, 75, 87. Give your answer to 2 decimal places

    Answer: Mean = 77.71, Median = 80, Range = 41