Daily Practice - Higher
12th August 1991
- 1Expanding and Factorising Quadratics3 marks
Factorise x^2 + 9x + 20.
- 2Repeated Percentage Change3 marks
A price rises by 25% and then falls by 15%. Work out the overall percentage change, to 2 decimal places.
- 3The Sine Rule3 marks
In triangle ABC, angle A is 47°, angle B is 36° and side a is 9 cm. Use the sine rule to work out side b, to 1 decimal place.
- 4Venn Diagrams3 marks
In a Venn diagram, 18 are in A only, 3 in B only, 9 in both and 7 in neither. Work out the probability a random one is in both.
- 5Cumulative Frequency2 marks
A cumulative frequency graph is drawn for 208 values. What cumulative frequency do you read across from to estimate the lower quartile?
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Any date always gives the same five questions, so a sheet can be set again or shared. All of August 1991, including the monthly compilation PDF.