Daily Practice - Higher Plus
Grades 8-9 - exam-stretch algebra, geometry and reasoning.
10th June 2021
- 1Surds3 marks
Simplify sqrt(27) + sqrt(48), giving your answer in the form a sqrt(b).
- 2Iteration3 marks
Use the iteration x(n+1) = cube root of (9x(n) + 5) with x(0) = 5. Work out x(1) to 3 decimal places.
- 3Direct and Inverse Proportion Depth3 marks
y is inversely proportional to x^2. When x = 2, y = 32. Work out y when x = 4.
- 4Finding the Area of Any Triangle3 marks
A triangle has sides of 16 cm and 7 cm and an area of 39.60 cm^2. Work out the acute angle between those two sides, to the nearest degree.
- 5Probability Equation Questions3 marks
A bag holds 5 counters, r of them red. Two are taken without replacement and P(both red) = 1/10. Work out r.
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