Daily Practice

Higher Plus

5th February 1987

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

1
Direct and Inverse Proportion Depth3 marks
y is inversely proportional to x^2. When x = 2, y = 9. Work out y when x = 3.
2
Vectors Proof Questions3 marks
OACB is a parallelogram with vector OA = b and vector OB = c. X is the midpoint. Write vector OX in terms of b and c.
3
Probability Equation Questions3 marks
The probability of winning a game is 4/5. A player expects 48 wins. How many games did they play?
4
Histograms3 marks
A histogram has four 10-wide classes from 0, with frequency densities 1, 0.5, 2, 3. Which class contains the median?
5
Surds3 marks
Simplify sqrt(18) + sqrt(72), giving your answer in the form a sqrt(b).

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