Daily Practice

Higher

17th March 1985

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

1
Direct and Inverse Proportion3 marks
y is inversely proportional to x. When x = 7, y = 30. Work out y when x = 5.
2
Vectors3 marks
a is the column vector (6, -2) and b is (2, -6). Work out 4a - 4b as a column vector.
3
Probability Trees3 marks
5 of 8 bulbs in a box are faulty. Two are taken with replacement. Work out the probability at least one is faulty.
4
Box Plots2 marks
A box plot has a minimum of 15 and a maximum of 27. Work out the range.
5
Surds2 marks
Write sqrt(32) in the form a sqrt(b), where b is as small as possible.

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