Daily Practice - Higher Plus
9th October 1991
- 1Histograms2 marks
On a histogram, a 10-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 20 cm by 11 cm, each correct to the nearest cm. Work out the upper bound of its area.
- 3Algebraic Fractions3 marks
Simplify (x^2 - 5x + 4)/(x - 4).
- 4Velocity Time Graphs3 marks
A tram runs at 19 m/s for 10 s, then slows steadily to rest over 4 s. Work out its average speed for the whole journey, to 2 decimal places.
- 53d Pythagoras and Trigonometry3 marks
A cuboid measures 5 cm by 9 cm by 4 cm tall. Work out the angle between its longest internal diagonal and the base, to 1 decimal place.
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