Daily Practice - Higher Plus
Grades 8-9 - exam-stretch algebra, geometry and reasoning.
15th November 2009
- 1Histograms2 marks
On a histogram, a 5-wide bar and a 20-wide bar have the same frequency density of 1.5. How many more values are in the wider class?
- 2Bounds3 marks
x = 173 and y = 10, each correct to the nearest whole number. Work out the upper bound of x - y.
- 3Quadratic Inequalities3 marks
Solve x^2 - 9x + 14 > 0.
- 4Velocity Time Graphs3 marks
A cyclist speeds up steadily from 9 m/s to 28 m/s over 4 seconds. Use the area under the velocity-time graph to find the distance travelled.
- 5Proof of the Circle Theorems2 marks
In a circle theorem proof, a step uses the fact that opposite angles of a cyclic quadrilateral are being proved. State the reason being quoted.
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