Daily Practice · Higher Plus

Daily Practice - Higher Plus

17th November 1992

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 = 4, y = 12. Work out y when x = 2.
2
The Sine Rule3 marks
In triangle ABC, angle A is 56°, side a is 10 cm and side b is 6 cm. Work out the acute angle B, to 1 decimal place.
3
Conditional Probability3 marks
A bag holds 6 red and 3 blue counters. Two are taken without replacement. Given the first was red, what is the probability the second is blue?
4
Histograms3 marks
A histogram has four 10-wide classes from 0, with frequency densities 2, 0.5, 1, 3. Which class contains the median?
5
Surds3 marks
Expand and simplify (8 + sqrt(3))(8 - sqrt(3)).

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