November 2021 Paper 2 Q2
2
(a) \(5m\) is decreased by 40%
The answer is \(\quad (m + 1)\)
Work out the value of \(m\). [2 marks]
(b) Solve \(\quad \sqrt[3]{2w - 10} = 18\) [2 marks]
| Answer | Mark | Comments |
|---|---|---|
| \(5m \times (1 - 0.4)\) or \(5m \times 0.6\) or \(3m\) | M1 | oe eg \(5m - 0.4 \times 5m\) or \(5m - 2m\) may be seen in an equation eg \(3m = m + 1\) |
| \(\dfrac{1}{2}\) or 0.5 | A1 |
Additional guidance
| \(2m\) only | M0 |
| \(2m = 1\) | M1 |
| Answer | Mark | Comments |
|---|---|---|
| \(2w - 10 = 18^3\) or \(2w - 10 = 5832\) or \(\dfrac{18^3 + 10}{2}\) | M1 | oe eg \(2w = 5842\) |
| 2921 | A1 |