Higher Plus
31st December 1974
- 1Histograms3 marks
A histogram has two bars: one 5 units wide with frequency density 2.5, one 5 units wide with density 3.5. How many values in total?
- 2Surds3 marks
Expand and simplify (8 + sqrt(6))(8 - sqrt(6)).
- 3Completing the Square3 marks
Work out the coordinates of the turning point of y = x^2 - 14x - 1.
- 4Velocity Time Graphs2 marks
On a velocity-time graph a car speeds up in a straight line from 4 m/s to 9 m/s over 10 seconds. Work out the acceleration.
- 53d Pythagoras and Trigonometry3 marks
A cuboid measures 9 cm by 13 cm by 15 cm. Work out the length of the longest diagonal inside it, to 1 decimal place.
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Any date always gives the same five questions, so a sheet can be set again or shared. All of December 1974, including the monthly compilation PDF.