Daily Practice

Higher Plus

21st January 1972

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

1
Probability Equation Questions3 marks
A bag holds 6 red and n blue counters. The probability of taking a red is 6/13. Work out n.
2
Histograms3 marks
On a histogram the bar for 50 < x <= 70 has a frequency density of 1.2. How many values are in that class?
3
Surds3 marks
Rationalise the denominator of 66/sqrt(11), giving your answer in its simplest form.
4
Factorising Harder Quadratics3 marks
Solve 5x^2 - 7x + 2 = 0.
5
Velocity Time Graphs2 marks
A train slows steadily from 21 m/s to rest in 5 seconds. Work out its deceleration.

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