Daily Practice - Higher Plus
18th August 1994
- 1Histograms2 marks
On a histogram, a 10-wide bar and a 20-wide bar have the same frequency density of 2.5. How many more values are in the wider class?
- 2Surds3 marks
Simplify sqrt(8) + sqrt(98), giving your answer in the form a sqrt(b).
- 3Factorising Harder Quadratics3 marks
Solve 16x^2 + 8x - 15 = 0.
- 4Velocity Time Graphs3 marks
A cyclist speeds up steadily from 10 m/s to 28 m/s over 6 seconds. Use the area under the velocity-time graph to find the distance travelled.
- 53d Pythagoras and Trigonometry3 marks
A cuboid measures 3 cm by 5 cm by 11 cm. Work out the length of the longest diagonal inside it, to 1 decimal place.
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