Higher November 2019 Paper 3 Q10
10
(a) Solve \(\dfrac{9 + x}{7} = 11 - x\) (3)
(b) Simplify \(\dfrac{4(y + 3)^3}{(y + 3)^2}\) (1)
| Answer | Mark | Mark scheme |
|---|---|---|
| 8.5 | M1 | for multiplying both sides by 7 as a first step eg \(9 + x = 7(11 - x)\) or dividing each term on the left hand side by 7 eg \(\dfrac{9}{7} + \dfrac{x}{7} = 11 - x\) |
| M1 | (dep M1) for method to isolate the \(x\) terms on one side | |
| A1 | oe |
Additional guidance
\(\times 7\) written near the equation is not enough for this mark
| Answer | Mark | Mark scheme |
|---|---|---|
| \(4(y + 3)\) | B1 | \(4(y + 3)\) or \(4y + 12\) |