Higher Plus
26th August 1977
- 1Direct and Inverse Proportion Depth3 marks
y is directly proportional to x^3. When x = 3, y = 81. Work out y when x = 4.
- 2Vectors Proof Questions3 marks
OACB is a parallelogram with vector OA = a and vector OB = c. M is the midpoint. Write vector OM in terms of a and c.
- 3Probability Equation Questions3 marks
The probability of winning a game is 4/5. A player expects 112 wins. How many games did they play?
- 4Histograms3 marks
On a histogram the bar for 30 < x <= 40 has a frequency density of 3.5. How many values are in that class?
- 5Surds3 marks
Rationalise the denominator of 4/sqrt(2), giving your answer in its simplest form.
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