Daily Practice · Higher

Daily Practice - Higher

Grades 6-7 - Higher-tier method and manipulation.

1st February 1998

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 = 9, y = 48. Work out y when x = 12.
2
Vectors3 marks
a is the column vector (-1, 1) and b is (4, -5). Work out 5a - 5b as a column vector.
3
Probability Trees3 marks
3 of 9 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 5 and a maximum of 17. Work out the range.
5
Fractional and Negative Indices2 marks
Write 7^-3 as a fraction.

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