Daily Practice

Higher Plus

27th June 1974

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

1
Probability Equation Questions3 marks
A bag holds 8 counters, r of them red. Two are taken without replacement and P(both red) = 1/28. Work out r.
2
Histograms3 marks
On a histogram the bar for 40 < x <= 60 has a frequency density of 0.4. How many values are in that class?
3
Surds3 marks
Simplify sqrt(20) + sqrt(180), giving your answer in the form a sqrt(b).
4
Completing the Square3 marks
Work out the coordinates of the turning point of y = x^2 - 12x + 5.
5
Velocity Time Graphs2 marks
A train slows steadily from 34 m/s to rest in 5 seconds. Work out its deceleration.

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