Daily Practice

Higher Plus

21st June 1966

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 7/10. Work out n.
2
Histograms3 marks
On a histogram the bar for 0 < x <= 20 has a frequency density of 0.4. How many values are in that class?
3
Surds3 marks
Expand and simplify (4 + sqrt(3))(4 - sqrt(3)).
4
Factorising Harder Quadratics3 marks
Solve 8x^2 - 14x + 3 = 0.
5
Velocity Time Graphs2 marks
A train slows steadily from 19 m/s to rest in 5 seconds. Work out its deceleration.

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