Daily Practice
Higher
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23rd August 1981
- 1Direct and Inverse Proportion3 marks
y is inversely proportional to x. When x = 8, y = 24. Work out y when x = 12.
- 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
16 students study Spanish and 10 of those also study Art. One Spanish student is picked at random. Work out the probability they study Art.
- 4Box Plots2 marks
A box plot has a minimum of 7 and a maximum of 45. Work out the range.
- 5Fractional and Negative Indices2 marks
Write 2^-3 as a fraction.
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