Daily Practice

Higher Plus

7th January 1988

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 = 4, y = 75. Work out y when x = 5.
2
The Cosine Rule3 marks
A triangle has sides 5 cm, 8 cm and 10 cm. Work out the angle opposite the 5 cm side, to 1 decimal place.
3
Probability Equation Questions3 marks
A bag holds 4 red and n blue counters. The probability of taking a red is 1/3. Work out n.
4
Histograms3 marks
A histogram has four 10-wide classes from 0, with frequency densities 0.5, 1, 2, 3. Which class contains the median?
5
Surds3 marks
Simplify sqrt(18) + sqrt(8), giving your answer in the form a sqrt(b).

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