Daily Practice

Higher Plus

5th November 1968

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 = 4, y = 320. Work out y when x = 2.
2
Finding the Area of Any Triangle3 marks
A triangle has sides of 10 cm and 12 cm and an area of 51.96 cm^2. Work out the acute angle between those two sides, to the nearest degree.
3
Probability Equation Questions3 marks
A bag holds 11 counters, r of them red. Two are taken without replacement and P(both red) = 1/55. Work out r.
4
Histograms3 marks
On a histogram the bar for 0 < x <= 20 has a frequency density of 1.2. How many values are in that class?
5
Surds3 marks
Expand and simplify (6 + sqrt(3))(6 - sqrt(3)).

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