Daily Practice · Higher Plus

Daily Practice - Higher Plus

Grades 8-9 - exam-stretch algebra, geometry and reasoning.

22nd March 2007

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 = 2, y = 32. Work out y when x = 4.
2
Vectors Proof Questions3 marks
OACB is a parallelogram with vector OA = b and vector OB = p. X is the point dividing AB in the ratio 2 : 1. Write vector OX in terms of b and p.
3
Probability Equation Questions3 marks
The probability of winning a game is 1/2. A player expects 75 wins. How many games did they play?
4
Histograms3 marks
On a histogram the bar for 10 < x <= 20 has a frequency density of 3.5. How many values are in that class?
5
Surds3 marks
Simplify sqrt(18) + sqrt(8), giving your answer in the form a sqrt(b).

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