Daily Practice - Higher
Grades 6-7 - Higher-tier method and manipulation.
24th July 2015
- 1The 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?
- 2Drawing Quadratic Graphs2 marks
For the curve y = x^2 + 4x - 9, work out y when x = 5.
- 3Direct and Inverse Proportion3 marks
y is directly proportional to x. When x = 9, y = 36. Work out y when x = 15.
- 4Sector Areas and Arc Lengths3 marks
A sector of a circle has radius 7 cm and angle 300°. Work out its area, to 1 decimal place.
- 5Conditional Probability3 marks
15 students study Spanish and 10 of those also study Art. One Spanish student is picked at random. Work out the probability they study Art.
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