Higher Plus
18th November 1989
- 1Histograms3 marks
A histogram has two bars: one 5 units wide with frequency density 1.5, one 20 units wide with density 0.6. How many values in total?
- 2Bounds3 marks
A car covers 240 m (to the nearest 10 m) in 7 s (to the nearest second). Work out the lower bound of its speed, to 2 decimal places.
- 3Factorising Harder Quadratics3 marks
Solve 16x^2 - 8x - 3 = 0.
- 4Direct and Inverse Proportion Depth3 marks
y is directly proportional to x^2. When x = 2, y = 28. Work out the positive value of x when y = 28.
- 53d Pythagoras and Trigonometry3 marks
A cuboid measures 4 cm by 8 cm by 13 cm tall. Work out the angle between its longest internal diagonal and the base, 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 November 1989, including the monthly compilation PDF.