Higher
9th August 1973
- 1Recurring Decimals to Fractions3 marks
Write the recurring decimal 0.8686... as a fraction in its simplest form.
- 2Quadratic Formula3 marks
Use the quadratic formula to solve x^2 - 12x + 10 = 0, to 2 decimal places.
- 3Repeated Percentage Change3 marks
A town's population is 20000 and grows by 5% each year. Work out the population after 6 years, to the nearest whole number.
- 4Similar Shapes (Area and Volume)3 marks
Two similar shapes have lengths in the ratio 1 : 5. The smaller has an area of 19 cm^2. Work out the area of the larger.
- 5Conditional Probability3 marks
18 students study Spanish and 3 of those also study Art. One Spanish student is picked at random. Work out the probability they study Art.
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