Higher November 2019 Paper 1 Q14
14.
(a) Find the value of \(\left(\dfrac{1}{5}\right)^{-3}\). [2]
(b) Find the value of \(256^{\frac{3}{4}}\). [2]
(c) Estimate the value of \(50^{\frac{1}{2}}\). [1]
| Scheme | Marks | Comments |
|---|---|---|
| 125 | B2 | B1 for sight of \(5^3\) or for \(\left(\dfrac{1}{125}\right)^{-1}\); allow for sight of \(\dfrac{1}{5^3} = \dfrac{1}{125}\) |
| Scheme | Marks | Comments |
|---|---|---|
| 64 | B2 | not from wrong working; B1 for \(4^3\) or for \(\left(\sqrt[4]{256}\right)^3\) |
| Scheme | Marks | Comments |
|---|---|---|
| 7 | B1 | Accept 7 to 7.2 inclusive |
| (5) |