Foundation November 2019 Paper 1 Q28
28 The diagram shows triangle \(AOB\).
Angle \(AOB\) is not an obtuse angle.
Find the greatest value of \(x\).
You must show all your working. (3)
| Answer | Mark | Mark scheme |
|---|---|---|
| 16 | P1 | for process to formulate an equation or inequality, eg \(2x + 3x + 10 \ast 90\) or for \(90 - 10\) |
| P1 | for a process to solve the equation or inequality by isolating terms in \(x\), eg \(5x \ast 90 - 10\) or for \((90 - 10) \div 5\) | |
| A1 | cao | |
| SC B1 for \(x = 34\) or for a value in the range \(15 \leqslant x \lt 16\) |
Additional guidance
*denotes an equality or inequality symbol
Accept equivalent forms
Award P2 for an embedded answer of 16, which could be shown on the diagram as 32, 48, (10) or written as \(x\) embedded in working in an equation.