Daily Practice

Higher Plus

13th March 1979

5 questions · 14 marks · Grades 8-9 · 51 question types in this band

1
Velocity Time Graphs2 marks
A train slows steadily from 13 m/s to rest in 4 seconds. Work out its deceleration.
2
Finding the Area of Any Triangle3 marks
A triangle has sides of 15 cm and 7 cm and an area of 52.50 cm^2. Work out the acute angle between those two sides, to the nearest degree.
3
Probability Equation Questions3 marks
A bag holds 11 counters, r of them red. Two are taken without replacement and P(both red) = 3/11. Work out r.
4
Histograms3 marks
On a histogram the bar for 30 < x <= 50 has a frequency density of 3.5. How many values are in that class?
5
Surds3 marks
Expand and simplify (9 + sqrt(6))(9 - sqrt(6)).

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