Daily Practice

Higher Plus

9th December 1981

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 = 49, y = 35. Work out y when x = 25.
2
The Cosine Rule3 marks
A triangle has sides 12 cm, 9 cm and 8 cm. Work out the angle opposite the 12 cm side, to 1 decimal place.
3
Probability Equation Questions3 marks
A bag holds 2 red and n blue counters. The probability of taking a red is 2/5. Work out n.
4
Histograms3 marks
A histogram has four 10-wide classes from 0, with frequency densities 1, 0.5, 3, 2. Which class contains the median?
5
Bounds3 marks
A rectangle is 12 cm by 15 cm, each correct to the nearest cm. Work out the upper bound of its area.

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