Higher Plus
25th August 1971
- 1Histograms3 marks
A histogram has two bars: one 10 units wide with frequency density 2, one 25 units wide with density 1.4. How many values in total?
- 2Bounds3 marks
A rectangle is 9 cm by 20 cm, each correct to the nearest cm. Work out the upper bound of its area.
- 3Completing the Square3 marks
Work out the coordinates of the turning point of y = x^2 + 2x + 1.
- 4Velocity Time Graphs2 marks
On a velocity-time graph a car speeds up in a straight line from 5 m/s to 13 m/s over 4 seconds. Work out the acceleration.
- 53d Pythagoras and Trigonometry3 marks
A cuboid measures 7 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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