Higher Plus
16th July 1978
- 1Velocity Time Graphs2 marks
A train slows steadily from 31 m/s to rest in 8 seconds. Work out its deceleration.
- 2Finding the Area of Any Triangle3 marks
A triangle has sides of 8 cm and 7 cm and an area of 19.80 cm^2. Work out the acute angle between those two sides, to the nearest degree.
- 3Probability Equation Questions3 marks
A bag holds 10 counters, r of them red. Two are taken without replacement and P(both red) = 1/3. Work out r.
- 4Histograms3 marks
On a histogram the bar for 0 < x <= 20 has a frequency density of 1.2. How many values are in that class?
- 5Bounds3 marks
x = 32 and y = 17, 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 July 1978, including the monthly compilation PDF.