Higher Plus
30th March 1977
- 13d Pythagoras and Trigonometry3 marks
A cuboid measures 15 cm by 12 cm by 9 cm. Work out the length of the longest diagonal inside it, to 1 decimal place.
- 2Probability Equation Questions3 marks
A bag holds 4 red and n blue counters. The probability of taking a red is 4/9. Work out n.
- 3Histograms3 marks
A histogram has two bars: one 20 units wide with frequency density 1.5, one 20 units wide with density 3.5. How many values in total?
- 4Bounds3 marks
A rectangle is 9 cm by 7 cm, each correct to the nearest cm. Work out the upper bound of its area.
- 5Inverse and Composite Functions3 marks
f(x) = 5x - 2 and g(x) = 5x - 4. Work out fg(3).
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