Daily Practice - Higher
Grades 6-7 - Higher-tier method and manipulation.
27th October 2007
- 1Box Plots2 marks
A box plot has minimum 1, lower quartile 9, median 13, upper quartile 18 and maximum 26. Work out the interquartile range.
- 2The Product Rule for Counting3 marks
A code is 3 letters (A to Z) followed by 2 digits (0 to 9), and repeats are allowed. How many codes are possible?
- 3Expanding and Factorising Quadratics3 marks
Factorise x^2 + 14x + 45.
- 4Direct and Inverse Proportion Depth3 marks
y is directly proportional to x^2. When x = 2, y = 20. Work out y when x = 4.
- 5The Sine Rule3 marks
In triangle ABC, angle A is 68°, angle B is 34° and side a is 6 cm. Use the sine rule to work out side b, to 1 decimal place.
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