Daily Practice - Higher Plus
16th October 1993
- 1Histograms3 marks
A histogram has two bars: one 5 units wide with frequency density 2.5, one 10 units wide with density 3.5. How many values in total?
- 2Bounds3 marks
A car covers 410 m (to the nearest 10 m) in 9 s (to the nearest second). Work out the lower bound of its speed, to 2 decimal places.
- 3Factorising Harder Quadratics3 marks
Solve 12x^2 + 7x + 1 = 0.
- 4Velocity Time Graphs2 marks
On a velocity-time graph a car speeds up in a straight line from 1 m/s to 13 m/s over 4 seconds. Work out the acceleration.
- 5Vectors Proof Questions3 marks
In a vector proof you find that vector PQ = 4a - 6b and vector RS = 16a - 24b. What does this show about PQ and RS?
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