Higher
22nd August 1980
- 1Direct and Inverse Proportion3 marks
y is directly proportional to x. When x = 3, y = 9. Work out y when x = 9.
- 2Finding the Area of Any Triangle3 marks
A triangle has sides of 5 cm and 9 cm with an angle of 101° between them. Work out its area, to 1 decimal place.
- 3Probability Trees3 marks
3 of 6 bulbs in a box are faulty. Two are taken with replacement. Work out the probability at least one is faulty.
- 4Capture Recapture2 marks
A capture-recapture estimate is made of the newt population of a stream. State one assumption the method relies on.
- 5Standard Form3 marks
Work out (36 x 10^8) / (4 x 10^2). Give your answer in standard form.
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