Daily Practice - Higher Plus
Grades 8-9 - exam-stretch algebra, geometry and reasoning.
28th March 2007
- 1Direct and Inverse Proportion Depth3 marks
y is directly proportional to sqrt(x). When x = 16, y = 36. Work out y when x = 36.
- 2The Cosine Rule3 marks
A triangle has sides 10 cm, 12 cm and 6 cm. Work out the angle opposite the 10 cm side, to 1 decimal place.
- 3Probability Equation Questions3 marks
A bag holds 4 red and n blue counters. The probability of taking a red is 4/11. Work out n.
- 4Histograms3 marks
A histogram has four 20-wide classes from 0, with frequency densities 2, 3, 1, 0.5. Which class contains the median?
- 5Bounds3 marks
A rectangle is 9 cm by 19 cm, each correct to the nearest cm. Work out the upper bound of its area.
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