Daily Practice - Higher Plus
Grades 8-9 - exam-stretch algebra, geometry and reasoning.
- 1Perpendicular Lines and the equation of a tangent3 marks
The point (6, 8) lies on the circle x^2 + y^2 = 100. Work out the gradient of the tangent to the circle at that point.
- 2Conditional Probability3 marks
A bag holds 3 red, 4 blue and 4 green counters. Two are taken without replacement. Given neither is green, what is the probability both are red?
- 3Histograms3 marks
A histogram has two bars: one 10 units wide with frequency density 0.4, one 5 units wide with density 0.6. How many values in total?
- 4Surds3 marks
Rationalise the denominator of 36/sqrt(3), giving your answer in its simplest form.
- 5Iteration3 marks
Use the iteration x(n+1) = cube root of (5x(n) + 6) with x(0) = 2. Work out x(1) to 3 decimal places.
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