Daily Practice · Higher Plus

Daily Practice - Higher Plus

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

14th October 1999

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

1
Probability Equation Questions3 marks
A bag holds 11 counters, r of them red. Two are taken without replacement and P(both red) = 2/11. Work out r.
2
Histograms3 marks
On a histogram the bar for 10 < x <= 20 has a frequency density of 1.2. How many values are in that class?
3
Surds3 marks
Simplify sqrt(20) + sqrt(245), giving your answer in the form a sqrt(b).
4
Transforming Graphs y=f(x)3 marks
The point (0, 5) lies on y = f(x). Write down its image on y = -f(x).
5
Velocity Time Graphs2 marks
A train slows steadily from 37 m/s to rest in 8 seconds. Work out its deceleration.

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