Daily Practice - Higher Plus
Grades 8-9 - exam-stretch algebra, geometry and reasoning.
- 1Direct and Inverse Proportion Depth3 marks
y is directly proportional to x^3. When x = 3, y = 54. Work out y when x = 2.
- 2Finding the Area of Any Triangle3 marks
A triangle has sides of 9 cm and 12 cm and an area of 46.77 cm^2. Work out the acute angle between those two sides, to the nearest degree.
- 3Probability Equation Questions3 marks
A bag holds 7 counters, r of them red. Two are taken without replacement and P(both red) = 1/21. Work out r.
- 4Histograms3 marks
On a histogram the bar for 10 < x <= 30 has a frequency density of 2.4. How many values are in that class?
- 5Bounds3 marks
A rectangle is 25 cm by 21 cm, each correct to the nearest cm. Work out the upper bound of its area.
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