Higher Plus
14th August 1977
- 1Velocity Time Graphs2 marks
A train slows steadily from 33 m/s to rest in 5 seconds. Work out its deceleration.
- 2The Cosine Rule3 marks
A triangle has sides of 15 cm and 18 cm with an angle of 79° between them. Work out the third side, to 1 decimal place.
- 3Conditional Probability3 marks
A bag holds 7 red, 4 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 30 < x <= 50 has a frequency density of 1.5. How many values are in that class?
- 5Bounds3 marks
x = 140 and y = 126, each correct to the nearest whole number. Work out the upper bound of x - y.
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Any date always gives the same five questions, so a sheet can be set again or shared. All of August 1977, including the monthly compilation PDF.