Daily Practice

Higher Plus

21st October 1976

5 questions · 15 marks · Grades 8-9 · 51 question types in this band

1
Histograms3 marks
A histogram has two bars: one 10 units wide with frequency density 1.2, one 20 units wide with density 0.8. How many values in total?
2
Surds3 marks
Simplify sqrt(80) + sqrt(80), giving your answer in the form a sqrt(b).
3
Iteration3 marks
Use the iteration x(n+1) = cube root of (9x(n) + 5) with x(0) = 2. Work out x(1) to 3 decimal places.
4
Direct and Inverse Proportion Depth3 marks
y is directly proportional to x^2. When x = 2, y = 36. Work out the positive value of x when y = 144.
5
3d Pythagoras and Trigonometry3 marks
A cuboid measures 6 cm by 9 cm by 3 cm. Work out the length of the longest diagonal inside it, to 1 decimal place.

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