Daily Practice - Higher Plus
Grades 8-9 - exam-stretch algebra, geometry and reasoning.
16th January 2003
- 1Surds3 marks
Simplify sqrt(18) + sqrt(32), giving your answer in the form a sqrt(b).
- 2Transforming Graphs y=f(x)3 marks
The point (-2, 6) 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 = 3, y = 75. Work out y when x = 5.
- 4Finding the Area of Any Triangle3 marks
A triangle has sides of 7 cm and 11 cm and an area of 38.50 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) = 1/11. Work out r.
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