Daily Practice - Higher Plus
Grades 8-9 - exam-stretch algebra, geometry and reasoning.
5th October 1997
- 1Vectors Proof Questions3 marks
In a vector proof you find that vector PQ = 4a - 4b and vector RS = 8a - 8b. What does this show about PQ and RS?
- 2Probability Equation Questions3 marks
The probability of winning a game is 1/4. A player expects 7 wins. How many games did they play?
- 3Histograms2 marks
On a histogram, a 5-wide bar and a 15-wide bar have the same frequency density of 1.5. How many more values are in the wider class?
- 4Bounds3 marks
x = 55 and y = 9, each correct to the nearest whole number. Work out the upper bound of x - y.
- 5Rearranging Harder Formulae3 marks
Make x the subject of 8x + 8 = y(x + 8).
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