Daily Practice - Higher
18th September 1993
- 1Expanding and Factorising Quadratics3 marks
Factorise x^2 - x - 72.
- 2Direct and Inverse Proportion Depth3 marks
y is directly proportional to x^2. When x = 3, y = 54. Work out y when x = 5.
- 3The Sine Rule3 marks
In triangle ABC, angle A is 33°, angle B is 30° and side a is 12 cm. Use the sine rule to work out side b, to 1 decimal place.
- 4Venn Diagrams3 marks
In a Venn diagram, 7 are in A only, 10 in B only, 4 in both and 1 in neither. Work out the probability a random one is in both.
- 5Box Plots2 marks
A box plot has minimum 8, lower quartile 15, median 17, upper quartile 25 and maximum 27. Work out the interquartile range.
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