Higher
21st March 1968
- 1Expanding and Factorising Quadratics3 marks
Factorise x^2 + 2x - 8.
- 2Repeated Percentage Change3 marks
A town's population is 14500 and grows by 3% each year. Work out the population after 6 years, to the nearest whole number.
- 3The Sine Rule3 marks
In triangle ABC, angle A is 64°, angle B is 84° and side a is 19 cm. Use the sine rule to work out side b, to 1 decimal place.
- 4Venn Diagrams3 marks
In a Venn diagram, 11 are in A only, 9 in B only, 12 in both and 4 in neither. Work out the probability a random one is in both.
- 5Histograms2 marks
A histogram class is 10 units wide and contains 15 values. Work out the frequency density.
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Any date always gives the same five questions, so a sheet can be set again or shared. All of March 1968, including the monthly compilation PDF.