Higher Plus
12th July 1968
- 1Surds3 marks
Rationalise the denominator of 18/sqrt(3), giving your answer in its simplest form.
- 2Completing the Square3 marks
Work out the coordinates of the turning point of y = x^2 + 16x - 6.
- 3Velocity Time Graphs2 marks
A train slows steadily from 25 m/s to rest in 10 seconds. Work out its deceleration.
- 4The Cosine Rule3 marks
A triangle has sides of 12 cm and 13 cm with an angle of 31° between them. Work out the third side, to 1 decimal place.
- 5Conditional Probability3 marks
A bag holds 4 red, 6 blue and 3 green counters. Two are taken without replacement. Given neither is green, what is the probability both are red?
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Any date always gives the same five questions, so a sheet can be set again or shared. All of July 1968, including the monthly compilation PDF.