Daily Practice

Higher Plus

2nd September 1975

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 20 < x <= 30 has a frequency density of 2.4. How many values are in that class?
3
Surds3 marks
Expand and simplify (4 + sqrt(2))(4 - sqrt(2)).
4
Algebraic Fractions3 marks
Write 7/(x + 4) + 7/(x - 3) as a single fraction.
5
Velocity Time Graphs2 marks
A train slows steadily from 24 m/s to rest in 8 seconds. Work out its deceleration.

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