Daily Practice - Higher Plus
Grades 8-9 - exam-stretch algebra, geometry and reasoning.
21st December 2018
- 1Conditional Probability3 marks
A bag holds 10 red and 4 blue counters. Two are taken without replacement. Given the first was red, what is the probability the second is blue?
- 2Histograms3 marks
On a histogram the bar for 0 < x <= 20 has a frequency density of 0.4. How many values are in that class?
- 3Surds3 marks
Rationalise the denominator of 72/sqrt(6), giving your answer in its simplest form.
- 4Factorising Harder Quadratics3 marks
Solve 4x^2 + 17x - 15 = 0.
- 5Velocity Time Graphs2 marks
A train slows steadily from 29 m/s to rest in 10 seconds. Work out its deceleration.
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