Daily Practice
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30th June 1970
- 1Conditional Probability3 marks
21 students study Spanish and 9 of those also study Art. One Spanish student is picked at random. Work out the probability they study Art.
- 2Capture Recapture3 marks
45 fish are marked and released. Later 54 are caught, of which 6 are marked. Estimate the population.
- 3Fractional and Negative Indices3 marks
Work out 64^(2/3).
- 4Quadratic Formula3 marks
Use the quadratic formula to solve x^2 + x - 7 = 0, to 2 decimal places.
- 5Writing a Ratio as a Fraction or Linear Function2 marks
x : y = 5 : 7. Write y in terms of x.
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