Daily Practice

Higher Plus

15th May 1990

5 questions · 14 marks · Grades 8-9 · 51 question types in this band

1
Vectors Proof Questions3 marks
In a vector proof you find that vector PQ = 3a + 5b and vector RS = 6a + 10b. What does this show about PQ and RS?
2
Probability Equation Questions3 marks
The probability of winning a game is 1/2. A player expects 18 wins. How many games did they play?
3
Histograms2 marks
On a histogram, a 5-wide bar and a 15-wide bar have the same frequency density of 2. How many more values are in the wider class?
4
Surds3 marks
Expand and simplify (6 + sqrt(5))(6 - sqrt(5)).
5
Inverse and Composite Functions3 marks
f(x) = 3x + 3 and g(x) = 2x + 9. Work out fg(5).

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