Higher Plus
27th August 1970
- 1Velocity Time Graphs2 marks
A train slows steadily from 26 m/s to rest in 10 seconds. Work out its deceleration.
- 2Finding the Area of Any Triangle3 marks
A triangle has sides of 16 cm and 13 cm and an area of 104.00 cm^2. Work out the acute angle between those two sides, to the nearest degree.
- 3Probability Equation Questions3 marks
A bag holds 12 counters, r of them red. Two are taken without replacement and P(both red) = 1/22. Work out r.
- 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?
- 5Surds3 marks
Simplify sqrt(75) + sqrt(75), giving your answer in the form a sqrt(b).
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