Daily Practice

Higher Plus

10th May 1988

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

1
Surds3 marks
Expand and simplify (9 + sqrt(10))(9 - sqrt(10)).
2
Completing the Square3 marks
Work out the coordinates of the turning point of y = x^2 + 10x + 14.
3
Direct and Inverse Proportion Depth3 marks
y is directly proportional to sqrt(x). When x = 36, y = 54. Work out y when x = 64.
4
Vectors Proof Questions3 marks
OACB is a parallelogram with vector OA = a and vector OB = m. X is the point dividing AB in the ratio 1 : 3. Write vector OX in terms of a and m.
5
Probability Equation Questions3 marks
The probability of winning a game is 7/8. A player expects 35 wins. How many games did they play?

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