Daily Practice

Higher Plus

12th August 1988

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

1
Probability Equation Questions3 marks
A bag holds 9 counters, r of them red. Two are taken without replacement and P(both red) = 1/12. Work out r.
2
Histograms3 marks
On a histogram the bar for 20 < x <= 30 has a frequency density of 1.5. How many values are in that class?
3
Surds3 marks
Rationalise the denominator of 72/sqrt(6), giving your answer in its simplest form.
4
Transforming Graphs y=f(x)3 marks
The point (-3, 3) lies on y = f(x). Write down its image on y = f(x + 4).
5
Velocity Time Graphs2 marks
A train slows steadily from 27 m/s to rest in 4 seconds. Work out its deceleration.

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