Daily Practice - Higher Plus
Grades 8-9 - exam-stretch algebra, geometry and reasoning.
19th March 2014
- 1Bounds3 marks
A rectangle is 25 cm by 24 cm, each correct to the nearest cm. Work out the upper bound of its area.
- 2Transforming Graphs y=f(x)3 marks
The point (-4, 1) lies on y = f(x). Write down its image on y = f(-x).
- 3Direct and Inverse Proportion Depth3 marks
y is inversely proportional to x^2. When x = 5, y = 27. Work out y when x = 3.
- 4Finding the Area of Any Triangle3 marks
A triangle has sides of 10 cm and 9 cm and an area of 22.50 cm^2. Work out the acute angle between those two sides, to the nearest degree.
- 5Probability Equation Questions3 marks
A bag holds 12 counters, r of them red. Two are taken without replacement and P(both red) = 5/33. Work out r.
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