Daily Practice

Higher Plus

18th June 1957

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

1
Direct and Inverse Proportion Depth3 marks
y is inversely proportional to x^2. When x = 2, y = 32. Work out y when x = 4.
2
The Cosine Rule3 marks
A triangle has sides 20 cm, 14 cm and 16 cm. Work out the angle opposite the 20 cm side, to 1 decimal place.
3
Probability Equation Questions3 marks
A bag holds 8 red and n blue counters. The probability of taking a red is 1/2. Work out n.
4
Histograms3 marks
A histogram has four 10-wide classes from 0, with frequency densities 3, 1, 2, 0.5. Which class contains the median?
5
Surds3 marks
Expand and simplify (9 + sqrt(7))(9 - sqrt(7)).

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