Higher Plus
27th January 1962
- 1Bounds3 marks
A car covers 890 m (to the nearest 10 m) in 2 s (to the nearest second). Work out the lower bound of its speed, to 2 decimal places.
- 2Quadratic Inequalities3 marks
Solve x^2 - 9x + 18 > 0.
- 3Direct and Inverse Proportion Depth3 marks
y is directly proportional to sqrt(x). When x = 49, y = 14. Work out y when x = 81.
- 4Vectors Proof Questions3 marks
OACB is a parallelogram with vector OA = q and vector OB = a. N is the point dividing AB in the ratio 3 : 1. Write vector ON in terms of q and a.
- 5Probability Equation Questions3 marks
The probability of winning a game is 4/5. A player expects 64 wins. How many games did they play?
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