Higher
11th August 1977
- 1Histograms2 marks
A histogram class is 20 units wide and contains 30 values. Work out the frequency density.
- 2Recurring Decimals to Fractions3 marks
Write the recurring decimal 0.8686... as a fraction in its simplest form.
- 3Parallel and Perpendicular Lines3 marks
Work out the equation of the line parallel to y = -5x + 6 that passes through (6, -18).
- 4Repeated Percentage Change3 marks
A town's population is 7500 and grows by 3% each year. Work out the population after 3 years, to the nearest whole number.
- 5SOHCAHTOA (Trigonometry)3 marks
A right-angled triangle has sides 12 cm, 16 cm and 20 cm. Work out the angle opposite the 12 cm side, to 1 decimal place.
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