Higher Plus
8th March 1985
- 1Histograms3 marks
A histogram has two bars: one 10 units wide with frequency density 1.5, one 20 units wide with density 3. How many values in total?
- 2Surds3 marks
Rationalise the denominator of 12/sqrt(2), giving your answer in its simplest form.
- 3Iteration3 marks
Use the iteration x(n+1) = cube root of (9x(n) + 2) with x(0) = 1. Work out x(1) to 3 decimal places.
- 4Velocity Time Graphs2 marks
On a velocity-time graph a car speeds up in a straight line from 4 m/s to 34 m/s over 10 seconds. Work out the acceleration.
- 53d Pythagoras and Trigonometry3 marks
A cuboid measures 6 cm by 5 cm by 10 cm. Work out the length of the longest diagonal inside it, to 1 decimal place.
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