Daily Practice

Higher

4th May 1990

5 questions · 14 marks · Grades 6-7 · 61 question types in this band

1
Conditional Probability3 marks
7 students study Spanish and 3 of those also study Art. One Spanish student is picked at random. Work out the probability they study Art.
2
Capture Recapture2 marks
A capture-recapture estimate is made of the newt population of a stream. State one assumption the method relies on.
3
Standard Form3 marks
Work out (32 x 10^6) / (4 x 10^2). Give your answer in standard form.
4
Quadratic Formula3 marks
Use the quadratic formula to solve 2x^2 + 8x - 9 = 0, to 2 decimal places.
5
Direct and Inverse Proportion3 marks
y is directly proportional to x. When x = 8, y = 88. Work out y when x = 12.

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