4MA1/2HR Jun 2018, Question 19: Calculating with Bounds
Pearson Edexcel International GCSE Mathematics A 4MA1 · Paper 2HR (Higher) · Calculator · 3 marks
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The question, in short
Using a = (p − q)/t with p = 8.4, q = 6.3, t = 0.27 each to 2 significant figures, find the upper bound of a, showing working, to 1 decimal place.
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Solution · 3 marks
- 18.45 − 6.25 = 2.2
- 22.2 / 0.265 = 8.3018867...
- 38.3
Answer8.3
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