Daily Practice

Higher Plus

14th October 1986

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 = 40. Work out y when x = 3.
2
The Cosine Rule3 marks
A triangle has sides 12 cm, 7 cm and 14 cm. Work out the angle opposite the 12 cm side, to 1 decimal place.
3
Probability Equation Questions3 marks
A bag holds 6 red and n blue counters. The probability of taking a red is 3/7. Work out n.
4
Histograms3 marks
On a histogram the bar for 10 < x <= 15 has a frequency density of 1.2. How many values are in that class?
5
Surds3 marks
Expand and simplify (6 + sqrt(2))(6 - sqrt(2)).

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