Daily Practice - Higher Plus
Grades 8-9 - exam-stretch algebra, geometry and reasoning.
4th October 2007
- 1Surds3 marks
Simplify sqrt(75) + sqrt(75), giving your answer in the form a sqrt(b).
- 2Iteration3 marks
Use the iteration x(n+1) = cube root of (9x(n) + 9) with x(0) = 2. Work out x(1) to 3 decimal places.
- 3Velocity Time Graphs2 marks
A train slows steadily from 28 m/s to rest in 4 seconds. Work out its deceleration.
- 4The Cosine Rule3 marks
A triangle has sides 13 cm, 9 cm and 6 cm. Work out the angle opposite the 13 cm side, to 1 decimal place.
- 5Probability Equation Questions3 marks
A bag holds 6 red and n blue counters. The probability of taking a red is 3/5. Work out n.
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