Higher
31st March 1979
- 1Direct and Inverse Proportion Depth3 marks
y is directly proportional to x^2. When x = 5, y = 150. Work out y when x = 9.
- 2Sector Areas and Arc Lengths3 marks
A sector of a circle has radius 13 cm and angle 90°. Work out its area, to 1 decimal place.
- 3Conditional Probability3 marks
29 students study Spanish and 12 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 minimum 11, lower quartile 16, median 18, upper quartile 24 and maximum 34. Work out the interquartile range.
- 5Surds2 marks
Write sqrt(48) in the form a sqrt(b), where b is as small as possible.
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Any date always gives the same five questions, so a sheet can be set again or shared. All of March 1979, including the monthly compilation PDF.