Daily Practice
Higher
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21st April 1979
- 1Box Plots2 marks
A box plot has minimum 15, lower quartile 18, median 22, upper quartile 27 and maximum 36. Work out the interquartile range.
- 2Recurring Decimals to Fractions3 marks
Write the recurring decimal 0.555... as a fraction in its simplest form.
- 3Expanding and Factorising Quadratics3 marks
Factorise x^2 + 10x + 9.
- 4Direct and Inverse Proportion Depth3 marks
y is directly proportional to x^2. When x = 4, y = 80. Work out y when x = 2.
- 5The Sine Rule3 marks
In triangle ABC, angle A is 66°, angle B is 53° and side a is 17 cm. Use the sine rule to work out side b, to 1 decimal place.
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Any date always gives the same five questions, so a sheet can be set again or shared. All of April 1979, including the monthly compilation PDF.