Higher
2nd September 1985
- 1SOHCAHTOA (Trigonometry)3 marks
A right-angled triangle has sides 8 cm, 15 cm and 17 cm. Work out the angle opposite the 8 cm side, to 1 decimal place.
- 2Probability Trees3 marks
A bag holds 5 red and 4 blue counters. Two are taken without replacement. Work out the probability both are red.
- 3Cumulative Frequency2 marks
A cumulative frequency graph is drawn for 44 values. What cumulative frequency do you read across from to estimate the lower quartile?
- 4Standard Form3 marks
Work out (14 x 10^12) / (7 x 10^2). Give your answer in standard form.
- 5Parallel and Perpendicular Lines3 marks
Work out the equation of the line parallel to y = -5x - 4 that passes through (3, -20).
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Any date always gives the same five questions, so a sheet can be set again or shared. All of September 1985, including the monthly compilation PDF.