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Capstone Jan 15 - 21 25 questions
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Monday 15 January 2018

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Simplify: √567

    Answer: 9√7
  2. 2. Algebra

    Complete the square: x² + 5x + 10

    Answer: (x + 5⁄2)² + 15⁄4
  3. 3. Geometry

    Find area of triangle: a = 23cm, b = 23cm, angle = 64°. Give your answer to 2 decimal places

    Answer: 237.73cm²
  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: 46, 53, 30, 56, 59, 11, 24, 17

    Answer: Mean = 37, Median = 38, Range = 48

Tuesday 16 January 2018

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Simplify: 4√63

    Answer: 12√7
  2. 2. Algebra

    Complete the square: x² + 5x - 7

    Answer: (x + 5⁄2)² - 53⁄4
  3. 3. Geometry

    Find area of triangle: a = 16cm, b = 29cm, angle = 56°. Give your answer to 2 decimal places

    Answer: 192.34cm²
  4. 4. Ratio

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

    Answer: 24:30:25
  5. 5. Statistics

    Find the mean, median and range of: 66, 29, 21, 20, 83, 93, 62. Give your answer to 2 decimal places

    Answer: Mean = 53.43, Median = 62, Range = 73

Wednesday 17 January 2018

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Simplify: √525

    Answer: 5√21
  2. 2. Algebra

    Complete the square: 3x² + 18x + 11

    Answer: 3(x + 3)² - 16
  3. 3. Geometry

    Find area of triangle: a = 15cm, b = 13cm, angle = 55°. Give your answer to 2 decimal places

    Answer: 79.87cm²
  4. 4. Ratio

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

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

    Find the mean, median and range of: 98, 70, 68, 100, 90, 32, 50. Give your answer to 2 decimal places

    Answer: Mean = 72.57, Median = 70, Range = 68

Thursday 18 January 2018

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Simplify: √108

    Answer: 6√3
  2. 2. Algebra

    Complete the square: 2x² + 20x + 6

    Answer: 2(x + 5)² - 44
  3. 3. Geometry

    Find area of triangle: a = 17cm, b = 18cm, angle = 65°. Give your answer to 2 decimal places

    Answer: 138.67cm²
  4. 4. Ratio

    a:b is 7:6 and b:c is 8:9. Find a:b:c in its simplest form.

    Answer: 28:24:27
  5. 5. Statistics

    Find the mean, median and range of: 81, 21, 67, 79, 95, 97, 67, 42. Give your answer to 2 decimal places

    Answer: Mean = 68.63, Median = 73, Range = 76

Friday 19 January 2018

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Simplify: √700

    Answer: 10√7
  2. 2. Algebra

    Complete the square: 4x² - 8x - 9

    Answer: 4(x - 1)² - 13
  3. 3. Geometry

    Find area of triangle: a = 15cm, b = 27cm, angle = 60°. Give your answer to 2 decimal places

    Answer: 175.37cm²
  4. 4. Ratio

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

    Answer: 28:20:35
  5. 5. Statistics

    Find the mean, median and range of: 84, 14, 83, 57, 91, 71, 47. Give your answer to 2 decimal places

    Answer: Mean = 63.86, Median = 71, Range = 77