Daily Practice · Higher Plus

Daily Practice - Higher Plus

Grades 8-9 - exam-stretch algebra, geometry and reasoning.

3rd August 1999

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

1
Conditional Probability3 marks
A bag holds 6 red and 3 blue counters. Two are taken without replacement. Given the first was red, what is the probability the second is blue?
2
Histograms3 marks
On a histogram the bar for 50 < x <= 55 has a frequency density of 1.2. How many values are in that class?
3
Surds3 marks
Expand and simplify (8 + sqrt(11))(8 - sqrt(11)).
4
Quadratic Inequalities3 marks
Solve x^2 + 10x + 24 > 0.
5
Velocity Time Graphs2 marks
A train slows steadily from 34 m/s to rest in 10 seconds. Work out its deceleration.

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