Daily Practice

Higher Plus

13th November 1986

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 = 49. Work out y when x = 81.
2
The Cosine Rule3 marks
A triangle has sides 15 cm, 8 cm and 15 cm. Work out the angle opposite the 15 cm side, to 1 decimal place.
3
Probability Equation Questions3 marks
A bag holds 3 red and n blue counters. The probability of taking a red is 3/10. Work out n.
4
Histograms3 marks
A histogram has four 20-wide classes from 0, with frequency densities 3, 2, 0.5, 1. Which class contains the median?
5
Surds3 marks
Simplify sqrt(18) + sqrt(18), giving your answer in the form a sqrt(b).

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