Daily Practice - Higher Plus
11th July 1991
- 1Histograms3 marks
A histogram has two bars: one 5 units wide with frequency density 2, one 20 units wide with density 1.4. How many values in total?
- 2Surds3 marks
Simplify sqrt(27) + sqrt(3), giving your answer in the form a sqrt(b).
- 3Rearranging Harder Formulae3 marks
Make x the subject of 8x + 6 = y(x + 6).
- 4Direct and Inverse Proportion Depth3 marks
y is directly proportional to x^2. When x = 3, y = 72. Work out the positive value of x when y = 128.
- 53d Pythagoras and Trigonometry3 marks
A cuboid measures 5 cm by 7 cm by 14 cm tall. Work out the angle between its longest internal diagonal and the base, to 1 decimal place.
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