Daily Practice · Higher Plus

Daily Practice - Higher Plus

13th August 1992

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

1
Direct and Inverse Proportion Depth3 marks
y is inversely proportional to x^2. When x = 2, y = 18. Work out y when x = 3.
2
The Cosine Rule3 marks
A triangle has sides 20 cm, 13 cm and 12 cm. Work out the angle opposite the 20 cm side, to 1 decimal place.
3
Probability Equation Questions3 marks
A bag holds 8 red and n blue counters. The probability of taking a red is 8/13. Work out n.
4
Histograms3 marks
A histogram has four 20-wide classes from 0, with frequency densities 0.5, 1, 3, 2. Which class contains the median?
5
Surds3 marks
Simplify sqrt(45) + sqrt(45), giving your answer in the form a sqrt(b).

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