Daily Practice · Higher Plus

Daily Practice - Higher Plus

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

16th October 2012

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

1
Vectors Proof Questions3 marks
In a vector proof you find that vector PQ = 3a + 3b and vector RS = 15a + 15b. What does this show about PQ and RS?
2
Probability Equation Questions3 marks
The probability of winning a game is 7/10. A player expects 84 wins. How many games did they play?
3
Histograms3 marks
A histogram has two bars: one 10 units wide with frequency density 2.5, one 25 units wide with density 0.8. How many values in total?
4
Surds3 marks
Expand and simplify (7 + sqrt(7))(7 - sqrt(7)).
5
Completing the Square3 marks
Work out the coordinates of the turning point of y = x^2 + 10x - 11.

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