Higher
11th June 1971
- 1Direct and Inverse Proportion3 marks
y is directly proportional to x. When x = 6, y = 42. Work out y when x = 7.
- 2Finding the Area of Any Triangle3 marks
A triangle has sides of 18 cm and 13 cm with an angle of 90° between them. Work out its area, to 1 decimal place.
- 3Probability Trees3 marks
4 of 10 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.
- 5Recurring Decimals to Fractions3 marks
Write the recurring decimal 0.111... as a fraction in its simplest form.
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