Higher November 2020 Paper 3 Q9
9 These two triangles are similar.
Not drawn accurately
Work out the value of \(a\). [2 marks]
| Answer | Mark | Comments |
|---|---|---|
| \(\dfrac{16}{20}\) or \(\dfrac{20}{16}\) or \(\dfrac{12}{20}\) or \(\dfrac{20}{12}\) or 12 : 9.6 or 9.6 : 12 or 16 : 9.6 or 9.6 : 16 | M1 | oe eg \(16 \div 20\) eg \(\dfrac{4}{5}\) or \(\dfrac{5}{4}\) or \(\dfrac{3}{5}\) or \(\dfrac{5}{3}\) eg 0.8 or 1.25 or 0.6 or 1.66… or 1.67 |
| 9.6 | A1 | oe |
Additional guidance
| Award M1 work even if not subsequently used | |
| Ignore further working in an attempt to round after answer 9.6 eg 9.6 in working with answer 10 | M1A1 |
| \(12 \times 20 \div 16\) | M1 |