Daily Practice

Higher Plus

30th July 1954

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

1
Conditional Probability3 marks
A bag holds 7 red and 5 blue counters. Two are taken without replacement. Given the first was red, what is the probability the second is blue?
2
Histograms3 marks
On a histogram the bar for 60 < x <= 80 has a frequency density of 3.5. How many values are in that class?
3
Surds3 marks
Rationalise the denominator of 84/sqrt(7), giving your answer in its simplest form.
4
Inverse and Composite Functions3 marks
f(x) = 3x - 9 and g(x) = 6x - 4. Work out fg(5).
5
Velocity Time Graphs2 marks
A train slows steadily from 27 m/s to rest in 5 seconds. Work out its deceleration.

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