Daily Practice - Higher Plus
Grades 8-9 - exam-stretch algebra, geometry and reasoning.
- 1Surds3 marks
Rationalise the denominator of 15/sqrt(5), giving your answer in its simplest form.
- 2Transforming Graphs y=f(x)3 marks
The point (4, -6) lies on y = f(x). Write down its image on y = -f(x).
- 3Direct and Inverse Proportion Depth3 marks
y is directly proportional to sqrt(x). When x = 4, y = 6. Work out y when x = 81.
- 4Finding the Area of Any Triangle3 marks
A triangle has sides of 15 cm and 14 cm and an area of 90.93 cm^2. Work out the acute angle between those two sides, to the nearest degree.
- 5Probability Equation Questions3 marks
A bag holds 7 counters, r of them red. Two are taken without replacement and P(both red) = 10/21. Work out r.
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