Higher Plus
9th August 1971
- 1Rearranging Harder Formulae3 marks
Make x the subject of 8x + 8 = y(x + 8).
- 2Velocity Time Graphs2 marks
On a velocity-time graph a car speeds up in a straight line from 0 m/s to 30 m/s over 10 seconds. Work out the acceleration.
- 33d Pythagoras and Trigonometry3 marks
A cuboid measures 4 cm by 7 cm by 3 cm. Work out the length of the longest diagonal inside it, to 1 decimal place.
- 4Probability Equation Questions3 marks
A bag holds 3 red and n blue counters. The probability of taking a red is 3/8. Work out n.
- 5Histograms3 marks
A histogram has two bars: one 20 units wide with frequency density 2.5, one 5 units wide with density 3. How many values in total?
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