Higher Plus
5th January 1977
- 13d Pythagoras and Trigonometry3 marks
A cuboid measures 14 cm by 4 cm by 4 cm tall. Work out the angle between its longest internal diagonal and the base, to 1 decimal place.
- 2Conditional Probability3 marks
A bag holds 10 red and 3 blue counters. Two are taken without replacement. Given the first was red, what is the probability the second is blue?
- 3Histograms3 marks
A histogram has two bars: one 10 units wide with frequency density 0.4, one 10 units wide with density 1.4. How many values in total?
- 4Bounds3 marks
A rectangle is 4 cm by 29 cm, each correct to the nearest cm. Work out the upper bound of its area.
- 5Quadratic Inequalities3 marks
Solve x^2 + 8x + 7 > 0.
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