Higher Plus
25th October 1981
- 1Histograms2 marks
On a histogram, a 10-wide bar and a 40-wide bar have the same frequency density of 2. How many more values are in the wider class?
- 2Bounds3 marks
x = 141 and y = 60, each correct to the nearest whole number. Work out the upper bound of x - y.
- 3Quadratic Simultaneous Equations3 marks
Solve x^2 + y^2 = 676 and y = x - 14 simultaneously.
- 4Velocity Time Graphs3 marks
A cyclist speeds up steadily from 10 m/s to 14 m/s over 4 seconds. Use the area under the velocity-time graph to find the distance travelled.
- 53d Pythagoras and Trigonometry3 marks
A cuboid measures 13 cm by 3 cm by 9 cm. Work out the length of the longest diagonal inside it, to 1 decimal place.
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