Daily Practice - Higher Plus
14th August 1991
- 13d Pythagoras and Trigonometry3 marks
A cuboid measures 12 cm by 5 cm by 6 cm. Work out the length of the longest diagonal inside it, to 1 decimal place.
- 2Probability Equation Questions3 marks
A bag holds 8 red and n blue counters. The probability of taking a red is 4/7. Work out n.
- 3Histograms2 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?
- 4Bounds3 marks
A rectangle is 29 cm by 18 cm, each correct to the nearest cm. Work out the upper bound of its area.
- 5Rearranging Harder Formulae3 marks
Make x the subject of 7x + 5 = y(x + 5).
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