Daily Practice - Higher Plus
Grades 8-9 - exam-stretch algebra, geometry and reasoning.
6th September 2015
- 1Direct and Inverse Proportion Depth3 marks
y is inversely proportional to x^2. When x = 4, y = 36. Work out y when x = 6.
- 2Vectors Proof Questions3 marks
OACB is a parallelogram with vector OA = c and vector OB = a. M is the point dividing AB in the ratio 1 : 3. Write vector OM in terms of c and a.
- 3Probability Equation Questions3 marks
The probability of winning a game is 3/8. A player expects 39 wins. How many games did they play?
- 4Histograms3 marks
A histogram has four 10-wide classes from 0, with frequency densities 2, 3, 0.5, 1. Which class contains the median?
- 5Bounds3 marks
x = 70 and y = 9, each correct to the nearest whole number. Work out the upper bound of x - y.
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