Higher Plus
2nd December 1983
- 1Histograms2 marks
On a histogram, a 4-wide bar and a 12-wide bar have the same frequency density of 2. How many more values are in the wider class?
- 2Surds3 marks
Rationalise the denominator of 33/sqrt(11), giving your answer in its simplest form.
- 3Completing the Square3 marks
Write x^2 - 12x - 14 in the form (x + a)^2 + b.
- 4Velocity Time Graphs3 marks
A cyclist speeds up steadily from 7 m/s to 18 m/s over 8 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 radius is drawn to the midpoint of a chord. State the reason being quoted.
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