Daily Practice - Higher
Grades 6-7 - Higher-tier method and manipulation.
24th December 1999
- 1The Sine Rule3 marks
In triangle ABC, angle A is 77°, angle B is 69° and side a is 8 cm. Use the sine rule to work out side b, to 1 decimal place.
- 2Venn Diagrams3 marks
In a Venn diagram, 14 are in A only, 9 in B only, 3 in both and 3 in neither. Work out the probability a random one is in both.
- 3Capture Recapture2 marks
A capture-recapture estimate is made of the ladybird population of a garden. State one assumption the method relies on.
- 4Fractional and Negative Indices3 marks
Work out 81^(3/2).
- 5Expanding and Factorising Quadratics3 marks
Factorise x^2 - 12x + 35.
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