Daily Practice - Higher Plus
Grades 8-9 - exam-stretch algebra, geometry and reasoning.
29th December 1997
- 1Probability Equation Questions3 marks
The probability of winning a game is 5/8. A player expects 35 wins. How many games did they play?
- 2Histograms3 marks
A histogram has four 20-wide classes from 0, with frequency densities 1, 2, 3, 0.5. Which class contains the median?
- 3Bounds3 marks
A block has mass 430 g (to the nearest 10 g) and volume 9 cm^3 (to the nearest cm^3). Work out the upper bound of its density, to 2 decimal places.
- 4Rearranging Harder Formulae3 marks
Make x the subject of 2x + 4 = y(x + 4).
- 5Direct and Inverse Proportion Depth3 marks
y is directly proportional to sqrt(x). When x = 49, y = 21. Work out y when x = 4.
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