Daily Practice

Higher Plus

20th July 1979

5 questions · 14 marks · Grades 8-9 · 51 question types in this band

1
Histograms2 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?
2
Surds3 marks
Rationalise the denominator of 54/sqrt(6), giving your answer in its simplest form.
3
Factorising Harder Quadratics3 marks
Solve 12x^2 + 5x - 3 = 0.
4
Velocity Time Graphs3 marks
A tram runs at 16 m/s for 10 s, then slows steadily to rest over 10 s. Work out its average speed for the whole journey, to 2 decimal places.
5
Perpendicular Lines and the equation of a tangent3 marks
The point (9, 12) lies on the circle x^2 + y^2 = 225. Work out the gradient of the tangent to the circle at that point.

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