Daily Practice - Higher Plus
16th August 1991
- 1Histograms3 marks
A histogram has two bars: one 10 units wide with frequency density 1.2, one 5 units wide with density 0.8. How many values in total?
- 2Surds3 marks
Rationalise the denominator of 63/sqrt(7), giving your answer in its simplest form.
- 3The Nth Term of a Quadratic Sequence3 marks
Work out the nth term of the quadratic sequence 4, 2, 2, 4, ...
- 4Velocity Time Graphs2 marks
On a velocity-time graph a car speeds up in a straight line from 3 m/s to 9 m/s over 4 seconds. Work out the acceleration.
- 5Perpendicular Lines and the equation of a tangent3 marks
The point (8, 15) lies on the circle x^2 + y^2 = 289. Work out the gradient of the tangent to the circle at that point.
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