Daily Practice

Higher Plus

12th December 1985

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

1
Direct and Inverse Proportion Depth3 marks
y is directly proportional to sqrt(x). When x = 36, y = 18. Work out y when x = 16.
2
Vectors Proof Questions3 marks
OACB is a parallelogram with vector OA = a and vector OB = p. N is the point dividing AB in the ratio 3 : 1. Write vector ON in terms of a and p.
3
Probability Equation Questions3 marks
The probability of winning a game is 3/5. A player expects 45 wins. How many games did they play?
4
Histograms3 marks
A histogram has four 20-wide classes from 0, with frequency densities 2, 1, 3, 0.5. Which class contains the median?
5
Surds3 marks
Simplify sqrt(72) + sqrt(2), giving your answer in the form a sqrt(b).

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