Daily Practice - Higher Plus
Grades 8-9 - exam-stretch algebra, geometry and reasoning.
- 1Probability Equation Questions3 marks
A bag holds 10 counters, r of them red. Two are taken without replacement and P(both red) = 1/45. Work out r.
- 2Histograms3 marks
On a histogram the bar for 0 < x <= 10 has a frequency density of 3.5. How many values are in that class?
- 3Surds3 marks
Rationalise the denominator of 45/sqrt(5), giving your answer in its simplest form.
- 4Completing the Square3 marks
Work out the coordinates of the turning point of y = x^2 - 14x + 13.
- 5Velocity Time Graphs2 marks
A train slows steadily from 25 m/s to rest in 8 seconds. Work out its deceleration.
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