Daily Practice - Higher Plus
Grades 8-9 - exam-stretch algebra, geometry and reasoning.
22nd April 2001
- 1Direct and Inverse Proportion Depth3 marks
y is directly proportional to x^3. When x = 3, y = 54. Work out y when x = 5.
- 2Vectors Proof Questions3 marks
OACB is a parallelogram with vector OA = b and vector OB = m. M is the point dividing AB in the ratio 1 : 2. Write vector OM in terms of b and m.
- 3Probability Equation Questions3 marks
The probability of winning a game is 9/10. A player expects 126 wins. How many games did they play?
- 4Histograms3 marks
On a histogram the bar for 0 < x <= 20 has a frequency density of 0.4. How many values are in that class?
- 5Bounds3 marks
x = 81 and y = 36, each correct to the nearest whole number. Work out the upper bound of x - y.
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