Daily Practice - Higher Plus
Grades 8-9 - exam-stretch algebra, geometry and reasoning.
10th March 2014
- 1Vectors Proof Questions3 marks
In a vector proof you find that vector PQ = 6a - 5b and vector RS = 18a - 15b. What does this show about PQ and RS?
- 2Probability Equation Questions3 marks
The probability of winning a game is 7/10. A player expects 28 wins. How many games did they play?
- 3Histograms2 marks
On a histogram, a 4-wide bar and a 16-wide bar have the same frequency density of 2. How many more values are in the wider class?
- 4Bounds3 marks
A block has mass 400 g (to the nearest 10 g) and volume 6 cm^3 (to the nearest cm^3). Work out the upper bound of its density, to 2 decimal places.
- 5Completing the Square3 marks
Work out the coordinates of the turning point of y = x^2 + 6x + 3.
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