Daily Practice

Higher Plus

15th May 1973

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 7/12. Work out n.
2
Histograms3 marks
On a histogram the bar for 50 < x <= 60 has a frequency density of 2.4. How many values are in that class?
3
Surds3 marks
Expand and simplify (5 + sqrt(11))(5 - sqrt(11)).
4
Completing the Square3 marks
Work out the coordinates of the turning point of y = x^2 - 10x - 2.
5
Velocity Time Graphs2 marks
A train slows steadily from 30 m/s to rest in 4 seconds. Work out its deceleration.

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