Daily Practice - Higher Plus
Grades 8-9 - exam-stretch algebra, geometry and reasoning.
23rd November 2006
- 13d Pythagoras and Trigonometry3 marks
A cuboid measures 10 cm by 11 cm by 4 cm. Work out the length of the longest diagonal inside it, to 1 decimal place.
- 2Probability Equation Questions3 marks
A bag holds 4 red and n blue counters. The probability of taking a red is 1/3. Work out n.
- 3Histograms2 marks
On a histogram, a 5-wide bar and a 20-wide bar have the same frequency density of 2. How many more values are in the wider class?
- 4Surds3 marks
Simplify sqrt(32) + sqrt(50), giving your answer in the form a sqrt(b).
- 5Quadratic Inequalities3 marks
Solve x^2 - 8x + 12 > 0.
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