Daily Practice

Higher Plus

13th November 1984

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

1
Probability Equation Questions3 marks
A bag holds 7 red and n blue counters. The probability of taking a red is 7/15. Work out n.
2
Histograms3 marks
On a histogram the bar for 50 < x <= 70 has a frequency density of 3.5. How many values are in that class?
3
Surds3 marks
Expand and simplify (9 + sqrt(11))(9 - sqrt(11)).
4
Rearranging Harder Formulae3 marks
Make x the subject of 8x + 3 = y(x + 3).
5
Velocity Time Graphs2 marks
A train slows steadily from 25 m/s to rest in 5 seconds. Work out its deceleration.

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