Higher Plus
11th July 1956
- 1Velocity Time Graphs2 marks
A train slows steadily from 26 m/s to rest in 5 seconds. Work out its deceleration.
- 2Finding the Area of Any Triangle3 marks
A triangle has sides of 15 cm and 8 cm and an area of 51.96 cm^2. Work out the acute angle between those two sides, to the nearest degree.
- 3Probability Equation Questions3 marks
A bag holds 7 counters, r of them red. Two are taken without replacement and P(both red) = 1/21. Work out r.
- 4Histograms3 marks
On a histogram the bar for 10 < x <= 15 has a frequency density of 3.5. How many values are in that class?
- 5Bounds3 marks
A rectangle is 27 cm by 18 cm, each correct to the nearest cm. Work out the upper bound of its area.
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