Daily Practice · Higher Plus

Daily Practice - Higher Plus

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

12th August 2011

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

1
Probability Equation Questions3 marks
A bag holds 9 counters, r of them red. Two are taken without replacement and P(both red) = 1/6. Work out r.
2
Histograms3 marks
On a histogram the bar for 0 < x <= 5 has a frequency density of 2.4. How many values are in that class?
3
Surds3 marks
Rationalise the denominator of 132/sqrt(11), giving your answer in its simplest form.
4
Completing the Square3 marks
Write x^2 + 16x + 11 in the form (x + a)^2 + b.
5
Velocity Time Graphs2 marks
A train slows steadily from 26 m/s to rest in 5 seconds. Work out its deceleration.

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