Daily Practice · Higher Plus

Daily Practice - Higher Plus

10th June 1991

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

1
Probability Equation Questions3 marks
A bag holds 2 red and n blue counters. The probability of taking a red is 2/5. Work out n.
2
Histograms3 marks
On a histogram the bar for 40 < x <= 45 has a frequency density of 2.4. How many values are in that class?
3
Bounds3 marks
A block has mass 280 g (to the nearest 10 g) and volume 3 cm^3 (to the nearest cm^3). Work out the upper bound of its density, to 2 decimal places.
4
Inverse and Composite Functions3 marks
f(x) = 3x + 2 and g(x) = 2x + 4. Work out fg(3).
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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