Daily Practice

Higher Plus

23rd January 1981

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

1
Surds3 marks
Rationalise the denominator of 9/sqrt(3), giving your answer in its simplest form.
2
Quadratic Inequalities3 marks
Solve x^2 + 5x + 4 < 0.
3
Direct and Inverse Proportion Depth3 marks
y is directly proportional to sqrt(x). When x = 49, y = 35. Work out y when x = 9.
4
The Cosine Rule3 marks
A triangle has sides 12 cm, 7 cm and 7 cm. Work out the angle opposite the 12 cm side, to 1 decimal place.
5
Probability Equation Questions3 marks
A bag holds 6 red and n blue counters. The probability of taking a red is 3/4. Work out n.

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