Higher Plus
14th July 1967
- 1Direct and Inverse Proportion Depth3 marks
y is directly proportional to x^3. When x = 4, y = 128. Work out y when x = 3.
- 2Finding the Area of Any Triangle3 marks
A triangle has sides of 9 cm and 7 cm and an area of 31.50 cm^2. Work out the acute angle between those two sides, to the nearest degree.
- 3Probability Equation Questions3 marks
A bag holds 5 counters, r of them red. Two are taken without replacement and P(both red) = 3/10. Work out r.
- 4Histograms3 marks
On a histogram the bar for 10 < x <= 30 has a frequency density of 2.4. How many values are in that class?
- 5Surds3 marks
Rationalise the denominator of 88/sqrt(11), giving your answer in its simplest form.
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Any date always gives the same five questions, so a sheet can be set again or shared. All of July 1967, including the monthly compilation PDF.