Higher
13th July 1978
- 1Histograms2 marks
A histogram class is 10 units wide and contains 20 values. Work out the frequency density.
- 2Reverse Percentages3 marks
A bill is £360 including VAT at 20%. Work out the amount before VAT.
- 3Parallel and Perpendicular Lines3 marks
Work out the equation of the line parallel to y = -2x - 9 that passes through (6, -9).
- 4Repeated Percentage Change3 marks
A town's population is 28500 and grows by 5% each year. Work out the population after 3 years, to the nearest whole number.
- 5SOHCAHTOA (Trigonometry)3 marks
A right-angled triangle has sides 9 cm, 40 cm and 41 cm. Work out the angle opposite the 9 cm side, to 1 decimal place.
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Any date always gives the same five questions, so a sheet can be set again or shared. All of July 1978, including the monthly compilation PDF.