Higher Plus
12th December 1977
- 1Velocity Time Graphs2 marks
A train slows steadily from 12 m/s to rest in 5 seconds. Work out its deceleration.
- 2The Cosine Rule3 marks
A triangle has sides of 14 cm and 10 cm with an angle of 109° between them. Work out the third side, to 1 decimal place.
- 3Conditional Probability3 marks
A bag holds 6 red, 3 blue and 3 green counters. Two are taken without replacement. Given neither is green, what is the probability both are red?
- 4Histograms3 marks
On a histogram the bar for 40 < x <= 60 has a frequency density of 1.2. How many values are in that class?
- 5Bounds3 marks
A block has mass 440 g (to the nearest 10 g) and volume 7 cm^3 (to the nearest cm^3). Work out the upper bound of its density, to 2 decimal places.
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Any date always gives the same five questions, so a sheet can be set again or shared. All of December 1977, including the monthly compilation PDF.