Higher Plus
23rd August 1972
- 13d Pythagoras and Trigonometry3 marks
A cuboid measures 14 cm by 9 cm by 14 cm. Work out the length of the longest diagonal inside it, to 1 decimal place.
- 2Probability Equation Questions3 marks
A bag holds 6 red and n blue counters. The probability of taking a red is 1/2. Work out n.
- 3Histograms3 marks
A histogram has two bars: one 20 units wide with frequency density 0.4, one 5 units wide with density 3. How many values in total?
- 4Bounds3 marks
A rectangle is 18 cm by 10 cm, each correct to the nearest cm. Work out the upper bound of its area.
- 5Algebraic Fractions3 marks
Write 5/(x - 4) + 7/(x - 6) as a single fraction.
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