4024/12 Oct/Nov 2023, Question 16: Rearranging Formulas
Cambridge O Level Mathematics 4024 · Paper 12 (Non-calculator) · Non-calculator · 3 marks
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The question, in short
Use the formula T = √(P − 4) to evaluate T for a given P, then rearrange it so that P is the subject.
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Part (a) · 1 mark
Substitute P = 40 into T = √(P − 4) and calculate the value of T.
- 1T = √(40 − 4) = √36
- 2T = 6
Answer6
Part (b) · 2 marks
Rearrange T = √(P − 4) to express P in terms of T.
- 1Start from T = √(P − 4)
- 2Square both sides: T² = P − 4
- 3Add 4 to both sides: P = T² + 4
AnswerT² + 4
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Also searched as: 4024/12/O/N/23 · 4024_w23_qp_12 · 4024 w23 12 · question 16.
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