Daily Practice · Higher

Daily Practice - Higher

5th February 1993

5 questions · 13 marks · Grades 6-7 · 61 question types in this band

1
Conditional Probability3 marks
30 students study Spanish and 11 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 snail population of a hedgerow. State one assumption the method relies on.
3
Surds2 marks
Write sqrt(8) in the form a sqrt(b), where b is as small as possible.
4
Quadratic Formula3 marks
Work out the discriminant of 4x^2 + 12x + 10 = 0 and say how many real solutions it has.
5
Direct and Inverse Proportion3 marks
y is directly proportional to x. When x = 9, y = 72. Work out y when x = 7.

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