Higher June 2018 Paper 2R Q19
19 \(a = \dfrac{p - q}{t}\)
\(p = 8.4\) correct to 2 significant figures.
\(q = 6.3\) correct to 2 significant figures.
\(t = 0.27\) correct to 2 significant figures.
Work out the upper bound for the value of \(a\).
Show your working clearly.
Give your answer correct to 1 decimal place.
(3)
| Scheme | Marks |
|---|---|
| 8.35, 8.45, 6.25, 6.35, 0.265, 0.275 | M1 |
| (\(a\) =) \(\dfrac{8.45 - 6.25}{0.265}\) | M1 |
| 8.3 | A1 |
| (3) | |
| (3 marks) |
Notes
M1: For sight of 8.35, 8.45, 6.25, 6.35, 0.265 or 0.275
M1: \(a = \dfrac{UB - LB_1}{LB_2}\) where \(8.4 \lt UB \leqslant 8.45\) and \(6.25 \leqslant LB_1 \lt 6.3\) and \(0.265 \leqslant LB_2 \lt 0.27\)
A1: 8.3(018867...) dep on M2