Higher Plus
8th April 1957
- 1Vectors Proof Questions3 marks
In a vector proof you find that vector PQ = 3a + 5b and vector RS = 15a + 25b. What does this show about PQ and RS?
- 2Probability Equation Questions3 marks
The probability of winning a game is 1/8. A player expects 7 wins. How many games did they play?
- 3Histograms3 marks
A histogram has two bars: one 10 units wide with frequency density 0.4, one 5 units wide with density 0.6. How many values in total?
- 4Bounds3 marks
A block has mass 540 g (to the nearest 10 g) and volume 17 cm^3 (to the nearest cm^3). Work out the upper bound of its density, to 2 decimal places.
- 5Rearranging Harder Formulae3 marks
Make x the subject of 4x + 2 = y(x + 2).
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