Higher November 2017 Paper 5 Q6
6 This rectangle has length \((4x - 5)\) cm and width \((x + 3)\) cm.
Not to scale
The perimeter of the rectangle is 46 cm.
Calculate the area of the rectangle.
........................................ cm2 [5]
| Answer | Marks | Part marks and guidance | |
|---|---|---|---|
| 120 | 5 | B3 for \(x = 5\) OR M1 for \(x + 3 + x + 3 + 4x - 5 + 4x - 5\) [= 46] oe M1 for \(10x = 46 + 4\) FT their linear eqn M1 for 50 ÷10 FT their \(ax = b\) M1 for (4 × their \(x\) – 5) × (their \(x\) + 3) | \(10x - 4\) [= 46] oe eg \(x + 3 + 4x - 5 = 23\) |