Higher
30th April 1980
- 1Speed and Density2 marks
A block has volume 105 cm^3 and density 7.5 g/cm^3. Work out its mass.
- 2Perpendicular Lines and the equation of a tangent2 marks
A line has gradient -5. Work out the gradient of a line perpendicular to it.
- 3Conditional Probability3 marks
17 students study Spanish and 4 of those also study Art. One Spanish student is picked at random. Work out the probability they study Art.
- 4Cumulative Frequency2 marks
Four classes in order have frequencies 10, 12, 9, 7. Write down the cumulative frequency at the end of the third class.
- 5Surds2 marks
Write sqrt(98) in the form a sqrt(b), where b is as small as possible.
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