Higher Plus
16th December 1989
- 1Vectors Proof Questions3 marks
In a vector proof you find that vector PQ = a + 5b and vector RS = 3a + 15b. What does this show about PQ and RS?
- 2Probability Equation Questions3 marks
The probability of winning a game is 1/5. A player expects 6 wins. How many games did they play?
- 3Histograms3 marks
A histogram has two bars: one 20 units wide with frequency density 0.4, one 5 units wide with density 0.8. How many values in total?
- 4Bounds3 marks
A car covers 110 m (to the nearest 10 m) in 7 s (to the nearest second). Work out the lower bound of its speed, to 2 decimal places.
- 5Algebraic Fractions3 marks
Write 4/(x - 6) + 5/(x - 5) as a single fraction.
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