Daily Practice - Higher Plus
Grades 8-9 - exam-stretch algebra, geometry and reasoning.
14th September 1997
- 1Bounds3 marks
x = 69 and y = 42, each correct to the nearest whole number. Work out the upper bound of x - y.
- 2Iteration3 marks
Use the iteration x(n+1) = cube root of (2x(n) + 6) with x(0) = 3. Work out x(1) to 3 decimal places.
- 3Velocity Time Graphs2 marks
A train slows steadily from 19 m/s to rest in 5 seconds. Work out its deceleration.
- 4Finding the Area of Any Triangle3 marks
A triangle has sides of 9 cm and 14 cm and an area of 31.50 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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