Daily Practice
Higher Plus
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20th April 1955
- 1Probability Equation Questions3 marks
A bag holds 7 red and n blue counters. The probability of taking a red is 7/15. Work out n.
- 2Histograms3 marks
On a histogram the bar for 60 < x <= 80 has a frequency density of 0.4. How many values are in that class?
- 3Bounds3 marks
A rectangle is 7 cm by 9 cm, each correct to the nearest cm. Work out the upper bound of its area.
- 4Factorising Harder Quadratics3 marks
Solve 12x^2 - 5x - 25 = 0.
- 5Velocity Time Graphs2 marks
A train slows steadily from 37 m/s to rest in 5 seconds. Work out its deceleration.
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