Daily Practice - Higher Plus
Grades 8-9 - exam-stretch algebra, geometry and reasoning.
26th October 2016
- 1Probability Equation Questions3 marks
A bag holds 7 red and n blue counters. The probability of taking a red is 7/12. Work out n.
- 2Histograms3 marks
A histogram has four 10-wide classes from 0, with frequency densities 3, 0.5, 2, 1. Which class contains the median?
- 3Bounds3 marks
A rectangle is 30 cm by 25 cm, each correct to the nearest cm. Work out the upper bound of its area.
- 4Transforming Graphs y=f(x)3 marks
The point (-6, 4) lies on y = f(x). Write down its image on y = -f(x).
- 5Direct and Inverse Proportion Depth3 marks
y is inversely proportional to x^2. When x = 4, y = 100. Work out y when x = 5.
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