Higher Plus
2nd March 1961
- 1Histograms3 marks
A histogram has two bars: one 20 units wide with frequency density 0.4, one 20 units wide with density 0.6. How many values in total?
- 2Surds3 marks
Simplify sqrt(48) + sqrt(75), giving your answer in the form a sqrt(b).
- 3Iteration3 marks
Use the iteration x(n+1) = cube root of (8x(n) + 8) with x(0) = 1. Work out x(1) to 3 decimal places.
- 4Direct and Inverse Proportion Depth3 marks
y is directly proportional to x^2. When x = 2, y = 12. Work out the positive value of x when y = 147.
- 5Proof of the Circle Theorems2 marks
In a circle theorem proof, a step uses the fact that the alternate segment theorem is being proved. State the reason being quoted.
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