Daily Practice - Higher
Grades 6-7 - Higher-tier method and manipulation.
28th November 2013
- 1The Sine Rule3 marks
In triangle ABC, angle A is 58°, angle B is 54° and side a is 11 cm. Use the sine rule to work out side b, to 1 decimal place.
- 2Venn Diagrams3 marks
In a Venn diagram, 9 are in A only, 5 in B only, 11 in both and 5 in neither. Work out the probability a random one is in both.
- 3Histograms2 marks
A histogram class is 20 units wide and contains 80 values. Work out the frequency density.
- 4Surds2 marks
Write sqrt(75) in the form a sqrt(b), where b is as small as possible.
- 5Expanding and Factorising Quadratics3 marks
Factorise x^2 - 3x - 18.
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