1MA0 Higher June 2016 Paper 2 Q18
18
(a) Simplify \(2a^3b \times 5a^2b^3\) (2)
(b) Make \(y\) the subject of the formula \[p = \sqrt{\frac{x + y}{5}}\] (3)
| Answer | Mark | Notes |
|---|---|---|
| \(10a^5b^4\) | 2 | B2 cao (B1 for any two of 10, \(a^5\), \(b^4\) in a product) |
| Answer | Mark | Notes |
|---|---|---|
| \(y = 5p^2 - x\) | 3 | M1 for a correct first step to either remove the square root, eg. \(p^2 = \dfrac{x + y}{5}\) or clear the fraction, eg. \(\sqrt{5}\,p = \sqrt{x + y}\) M1 (dep) for a method to remove the square root and a method to clear the fraction, eg. \(5p^2 = x + y\) A1 for \(y = 5p^2 - x\) |