Daily Practice - Higher Plus
Grades 8-9 - exam-stretch algebra, geometry and reasoning.
11th September 2012
- 1Probability Equation Questions3 marks
The probability of winning a game is 5/8. A player expects 40 wins. How many games did they play?
- 2Histograms3 marks
On a histogram the bar for 60 < x <= 70 has a frequency density of 1.2. How many values are in that class?
- 3Surds3 marks
Expand and simplify (8 + sqrt(5))(8 - sqrt(5)).
- 4The Nth Term of a Quadratic Sequence2 marks
A quadratic sequence starts -1, 1, 7, 17. Work out the second difference, and the coefficient of n^2.
- 5Direct and Inverse Proportion Depth3 marks
y is directly proportional to x^3. When x = 2, y = 16. Work out y when x = 4.
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