Daily Practice

Higher Plus

27th July 1982

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

1
Probability Equation Questions3 marks
A bag holds 4 red and n blue counters. The probability of taking a red is 1/3. Work out n.
2
Histograms3 marks
On a histogram the bar for 60 < x <= 70 has a frequency density of 2.4. How many values are in that class?
3
Surds3 marks
Expand and simplify (8 + sqrt(10))(8 - sqrt(10)).
4
Completing the Square3 marks
Write x^2 + 2x - 4 in the form (x + a)^2 + b.
5
Velocity Time Graphs2 marks
A train slows steadily from 14 m/s to rest in 10 seconds. Work out its deceleration.

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