4MA0 Foundation January 2016 Paper 1R Q12
12
(a) Solve \(x - 9 = 15\) (1)
(b) Solve \(\dfrac{3}{4}y = 12\) (2)
(c) Factorise fully \(18c - 27\) (2)
(d) Expand and simplify \((t - 4)(t + 5)\) (2)
| Scheme | Marks |
|---|---|
| 24 | B1 |
| (1) |
| Scheme | Marks |
|---|---|
| \(3y = 12 \times 4\) or \(\tfrac{1}{4}y = \tfrac{12}{3}\) or \(y = 12 \times \tfrac{4}{3}\) or \(y = 12 \div \tfrac{3}{4}\) | M1 |
| 16 | A1 |
| (2) |
| Scheme | Marks |
|---|---|
| \(9(2c - 3)\) | B2 |
| (2) |
Notes
B2: Award B1 for \(3(6c - 9)\)
| Scheme | Marks |
|---|---|
| \(t^2 - 4t + 5t - 20\) | M1 |
| \(t^2 + t - 20\) | A1 |
| (2) | |
| Total 7 marks |
Notes
M1: for three correct terms out of four or for four terms correct except for signs.