Daily Practice - Higher Plus
Grades 8-9 - exam-stretch algebra, geometry and reasoning.
11th October 2019
- 1Probability Equation Questions3 marks
A bag holds 4 red and n blue counters. The probability of taking a red is 2/3. Work out n.
- 2Histograms3 marks
A histogram has four 20-wide classes from 0, with frequency densities 2, 3, 0.5, 1. Which class contains the median?
- 3Surds3 marks
Rationalise the denominator of 55/sqrt(11), giving your answer in its simplest form.
- 4Rearranging Harder Formulae3 marks
Make x the subject of 5x + 2 = y(x + 2).
- 5Direct and Inverse Proportion Depth3 marks
y is inversely proportional to x^2. When x = 3, y = 72. Work out y when x = 6.
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