O-LevelMathematicsNumber4024/12 · Oct/Nov 2025 · Q194 Marks
Evaluate 16^(-3/4).
- (a)Evaluate 16^(-3/4).[2]
- (b)Write 9² × 3^(-1/2) as a single power of 3.[2]
Mark scheme
Marking points from the official mark scheme (Oct/Nov 2025). The mark or mark type is shown in brackets.
- [2] (a) 1/8
- [2] (a) B1 for 2^-3 or better or for 1/(16^(1/4))^3 or better or for answer 8
- [2] (b) 3^(7/2)
- [2] (b) M1 for 9² = (3²)² soi
- [2] (b) If 0 scored, SC1 for answer 3.5 oe
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