Daily Practice - Higher Plus
Grades 8-9 - exam-stretch algebra, geometry and reasoning.
5th December 2021
- 1Conditional Probability3 marks
A bag holds 4 red and 8 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 30 < x <= 35 has a frequency density of 1.5. How many values are in that class?
- 3Bounds3 marks
x = 153 and y = 30, each correct to the nearest whole number. Work out the upper bound of x - y.
- 4Quadratic Inequalities3 marks
Solve x^2 + 9x + 18 > 0.
- 5Velocity Time Graphs2 marks
A train slows steadily from 19 m/s to rest in 10 seconds. Work out its deceleration.
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