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3 marksSubstitution in Algebraic Expressions

CSEC Mathematics · January 2008 · Paper 2 · Question 9(b)(iii)

The lengths, in cm, of the sides of a right-angled triangle are a, (a – 7), and (a + 1).

Hence, state the lengths of the THREE sides of the triangle.

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Other parts of this question

  1. 9(a)(i)Write an equation relating V and P.[2 marks]
  2. 9(a)(ii)If V = 12.8 when P = 500, determine the constant of variation.[2 marks]
  3. 9(a)(iii)Calculate the value of V when P = 480.[2 marks]
  4. 9(b)(i)Using Pythagoras theorem, write an equation in terms of a to represent the relationship among the three sides.[2 marks]
  5. 9(b)(ii)Solve the equation for a.[4 marks]

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