Daily Practice

Higher Plus

31st August 1976

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 x^3. When x = 4, y = 320. Work out y when x = 5.
2
Vectors Proof Questions3 marks
OACB is a parallelogram with vector OA = q and vector OB = c. X is the midpoint. Write vector OX in terms of q and c.
3
Probability Equation Questions3 marks
The probability of winning a game is 3/8. A player expects 39 wins. How many games did they play?
4
Histograms3 marks
On a histogram the bar for 40 < x <= 45 has a frequency density of 1.2. How many values are in that class?
5
Surds3 marks
Expand and simplify (9 + sqrt(3))(9 - sqrt(3)).

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