Daily Practice - Higher Plus
Grades 8-9 - exam-stretch algebra, geometry and reasoning.
20th July 1997
- 1Conditional Probability3 marks
A bag holds 6 red, 7 blue and 4 green counters. Two are taken without replacement. Given neither is green, what is the probability both are red?
- 2Histograms3 marks
On a histogram the bar for 20 < x <= 30 has a frequency density of 3.5. How many values are in that class?
- 3Bounds3 marks
x = 37 and y = 21, each correct to the nearest whole number. Work out the upper bound of x - y.
- 4Transforming Graphs y=f(x)3 marks
The point (-1, -3) lies on y = f(x). Write down its image on y = f(x) + 5.
- 5Velocity Time Graphs2 marks
A train slows steadily from 14 m/s to rest in 8 seconds. Work out its deceleration.
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