Daily Practice - Higher
Grades 6-7 - Higher-tier method and manipulation.
9th December 2017
- 1Box Plots2 marks
A box plot has minimum 8, lower quartile 16, median 23, upper quartile 25 and maximum 33. Work out the interquartile range.
- 2The Product Rule for Counting3 marks
A code is 3 letters (A to Z) followed by 3 digits (0 to 9), and repeats are allowed. How many codes are possible?
- 3Expanding and Factorising Quadratics3 marks
Factorise x^2 + x - 30.
- 4Direct and Inverse Proportion Depth3 marks
y is directly proportional to x^2. When x = 6, y = 288. Work out y when x = 3.
- 5The Sine Rule3 marks
In triangle ABC, angle A is 56°, angle B is 80° and side a is 9 cm. Use the sine rule to work out side b, to 1 decimal place.
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