Higher
21st February 1980
- 1Histograms2 marks
A histogram class is 4 units wide and contains 10 values. Work out the frequency density.
- 2Recurring Decimals to Fractions3 marks
Write the recurring decimal 0.6262... as a fraction in its simplest form.
- 3Drawing Other Graphs: Cubic/Reciprocal2 marks
For the curve y = 70/x, work out y when x = 10, and write down the equation of its vertical asymptote.
- 4Repeated Percentage Change3 marks
A town's population is 5500 and grows by 8% each year. Work out the population after 6 years, to the nearest whole number.
- 5Similar Shapes (Area and Volume)3 marks
Two similar solids have lengths in the ratio 1 : 4. The larger has a volume of 640 cm^3. Work out the volume of the smaller.
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Any date always gives the same five questions, so a sheet can be set again or shared. All of February 1980, including the monthly compilation PDF.