Higher Plus
9th April 1980
- 1Histograms2 marks
On a histogram, a 5-wide bar and a 20-wide bar have the same frequency density of 3. How many more values are in the wider class?
- 2Bounds3 marks
A rectangle is 29 cm by 14 cm, each correct to the nearest cm. Work out the upper bound of its area.
- 3Quadratic Inequalities3 marks
Solve x^2 - 6x > 0.
- 4Velocity Time Graphs3 marks
A tram runs at 5 m/s for 30 s, then slows steadily to rest over 10 s. Work out its average speed for the whole journey, to 2 decimal places.
- 53d Pythagoras and Trigonometry3 marks
A cuboid measures 14 cm by 7 cm by 7 cm tall. Work out the angle between its longest internal diagonal and the base, to 1 decimal place.
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