Daily Practice - Higher Plus
Grades 8-9 - exam-stretch algebra, geometry and reasoning.
18th September 2020
- 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?
- 2Surds3 marks
Rationalise the denominator of 14/sqrt(2), giving your answer in its simplest form.
- 3Inverse and Composite Functions3 marks
f(x) = 2x - 8 and g(x) = 2x - 8. Work out fg(4).
- 4Velocity Time Graphs3 marks
A cyclist speeds up steadily from 8 m/s to 12 m/s over 12 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 a tangent meets a radius at the point of contact. State the reason being quoted.
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