Daily Practice

Higher

21st August 1987

5 questions · 12 marks · Grades 6-7 · 61 question types in this band

1
Expanding and Factorising Quadratics2 marks
Factorise x^2 - 49.
2
Direct and Inverse Proportion3 marks
y is directly proportional to x. When x = 8, y = 88. Work out y when x = 11.
3
Circle Theorems2 marks
A, B and C are points on a circle with centre O. Angle AOC is 126°. Work out angle ABC, where B is on the major arc.
4
Venn Diagrams3 marks
In a Venn diagram, 18 are in A only, 4 in B only, 5 in both and 1 in neither. Work out the probability a random one is in both.
5
Capture Recapture2 marks
A capture-recapture estimate is made of the moth population of a meadow. State one assumption the method relies on.

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