Daily Practice · Higher Plus

Daily Practice - Higher Plus

20th October 1992

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

1
Probability Equation Questions3 marks
A bag holds 10 counters, r of them red. Two are taken without replacement and P(both red) = 1/15. Work out r.
2
Histograms3 marks
A histogram has four 10-wide classes from 0, with frequency densities 2, 3, 1, 0.5. Which class contains the median?
3
Surds3 marks
Expand and simplify (3 + sqrt(5))(3 - sqrt(5)).
4
Transforming Graphs y=f(x)3 marks
The point (2, 6) lies on y = f(x). Write down its image on y = f(x) + 6.
5
Direct and Inverse Proportion Depth3 marks
y is directly proportional to sqrt(x). When x = 4, y = 10. Work out y when x = 25.

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