Daily Practice - Higher Plus
8th December 1992
- 1Histograms3 marks
A histogram has two bars: one 20 units wide with frequency density 2, one 25 units wide with density 0.8. How many values in total?
- 2Surds3 marks
Expand and simplify (3 + sqrt(6))(3 - sqrt(6)).
- 3Algebraic Fractions3 marks
Write 2/(x + 4) + 6/(x - 1) as a single fraction.
- 4Velocity Time Graphs2 marks
On a velocity-time graph a car speeds up in a straight line from 8 m/s to 15.5 m/s over 5 seconds. Work out the acceleration.
- 5Perpendicular Lines and the equation of a tangent3 marks
The point (3, 4) lies on the circle x^2 + y^2 = 25. Work out the gradient of the tangent to the circle at that point.
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Any date always gives the same five questions, so a sheet can be set again or shared. All of December 1992, including the monthly compilation PDF.