Daily Practice

Higher Plus

27th December 1973

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

1
Direct and Inverse Proportion Depth3 marks
y is directly proportional to sqrt(x). When x = 9, y = 12. Work out y when x = 4.
2
The Sine Rule3 marks
In triangle ABC, angle A is 73°, side a is 10 cm and side b is 5 cm. Work out the acute angle B, to 1 decimal place.
3
Conditional Probability3 marks
A bag holds 5 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 1, 2, 3, 0.5. Which class contains the median?
5
Surds3 marks
Simplify sqrt(12) + sqrt(3), giving your answer in the form a sqrt(b).

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