Higher Plus
7th October 1969
- 1Direct and Inverse Proportion Depth3 marks
y is directly proportional to x^3. When x = 2, y = 48. Work out y when x = 5.
- 2Vectors Proof Questions3 marks
OACB is a parallelogram with vector OA = m and vector OB = a. N is the point dividing AB in the ratio 2 : 1. Write vector ON in terms of m and a.
- 3Probability Equation Questions3 marks
The probability of winning a game is 2/5. A player expects 26 wins. How many games did they play?
- 4Histograms3 marks
On a histogram the bar for 30 < x <= 40 has a frequency density of 2.4. How many values are in that class?
- 5Surds3 marks
Expand and simplify (9 + sqrt(7))(9 - sqrt(7)).
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