Daily Practice - Higher Plus
12th September 1995
- 1Histograms3 marks
A histogram has two bars: one 5 units wide with frequency density 1.2, one 25 units wide with density 3.5. How many values in total?
- 2Surds3 marks
Expand and simplify (7 + sqrt(10))(7 - sqrt(10)).
- 3Proof2 marks
In an algebraic proof, how would you write the next even number after 2n in terms of an integer n?
- 4Velocity Time Graphs2 marks
On a velocity-time graph a car speeds up in a straight line from 7 m/s to 57 m/s over 20 seconds. Work out the acceleration.
- 53d Pythagoras and Trigonometry3 marks
A cuboid measures 10 cm by 3 cm by 9 cm. Work out the length of the longest diagonal inside it, to 1 decimal place.
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