Higher Plus
20th February 1966
- 1Vectors Proof Questions3 marks
In a vector proof you find that vector PQ = a + 2b and vector RS = 3a + 6b. What does this show about PQ and RS?
- 2Probability Equation Questions3 marks
The probability of winning a game is 1/5. A player expects 10 wins. How many games did they play?
- 3Histograms3 marks
A histogram has two bars: one 10 units wide with frequency density 2.5, one 5 units wide with density 1.4. How many values in total?
- 4Bounds3 marks
x = 84 and y = 48, each correct to the nearest whole number. Work out the upper bound of x - y.
- 5Completing the Square3 marks
Write x^2 + 14x - 10 in the form (x + a)^2 + b.
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