Daily Practice - Higher Plus
Grades 8-9 - exam-stretch algebra, geometry and reasoning.
4th January 2017
- 1Direct and Inverse Proportion Depth3 marks
y is directly proportional to x^3. When x = 3, y = 162. Work out y when x = 2.
- 2The Cosine Rule3 marks
A triangle has sides 9 cm, 16 cm and 9 cm. Work out the angle opposite the 9 cm side, to 1 decimal place.
- 3Probability Equation Questions3 marks
A bag holds 2 red and n blue counters. The probability of taking a red is 2/9. Work out n.
- 4Histograms3 marks
On a histogram the bar for 20 < x <= 30 has a frequency density of 1.5. How many values are in that class?
- 5Bounds3 marks
A rectangle is 28 cm by 18 cm, each correct to the nearest cm. Work out the upper bound of its area.
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