Daily Practice

Higher Plus

24th July 1978

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

1
Conditional Probability3 marks
A bag holds 4 red and 6 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 40 < x <= 60 has a frequency density of 1.2. How many values are in that class?
3
Bounds3 marks
A block has mass 880 g (to the nearest 10 g) and volume 19 cm^3 (to the nearest cm^3). Work out the upper bound of its density, to 2 decimal places.
4
Transforming Graphs y=f(x)3 marks
The point (0, -1) lies on y = f(x). Write down its image on y = -f(x).
5
Velocity Time Graphs2 marks
A train slows steadily from 30 m/s to rest in 8 seconds. Work out its deceleration.

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