2026 NCHS P1 Q6

2026 NCHS P1 Q6

Secondary 4
4 marks
  1. It is given that \(p=\dfrac{q(r-2)}{7-r}\).
    Calculate the value of \(p\) when \(q=20.26\) and \(r=-8.19\).
    Give your answer to 2 decimal places.[1]
  2. Rearrange the formula to make \(r\) the subject.[3]

Solution:

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Answer:(a) \(-13.59\) (b) \(r=\dfrac{7p+2q}{p+q}\).

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