Daily Practice - Higher Plus
Grades 8-9 - exam-stretch algebra, geometry and reasoning.
30th November 1999
- 13d Pythagoras and Trigonometry3 marks
A cuboid measures 10 cm by 3 cm by 11 cm. Work out the length of the longest diagonal inside it, to 1 decimal place.
- 2Probability Equation Questions3 marks
A bag holds 8 red and n blue counters. The probability of taking a red is 4/7. Work out n.
- 3Histograms3 marks
A histogram has two bars: one 5 units wide with frequency density 1.2, one 10 units wide with density 3. How many values in total?
- 4Surds3 marks
Expand and simplify (8 + sqrt(2))(8 - sqrt(2)).
- 5Quadratic Inequalities3 marks
Solve x^2 + 4x + 3 > 0.
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