Daily Practice

Higher Plus

14th November 1982

5 questions · 15 marks · Grades 8-9 · 51 question types in this band

1
Bounds3 marks
x = 81 and y = 8, each correct to the nearest whole number. Work out the upper bound of x - y.
2
Inverse and Composite Functions3 marks
f(x) = 2x + 2. Work out the inverse function f^-1(x).
3
Direct and Inverse Proportion Depth3 marks
y is inversely proportional to x^2. When x = 3, y = 25. Work out y when x = 5.
4
The Cosine Rule3 marks
A triangle has sides 8 cm, 16 cm and 13 cm. Work out the angle opposite the 8 cm side, to 1 decimal place.
5
Probability Equation Questions3 marks
A bag holds 2 red and n blue counters. The probability of taking a red is 2/9. Work out n.

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