Daily Practice

Higher Plus

18th February 1972

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 = 3, y = 81. Work out y when x = 5.
2
Finding the Area of Any Triangle3 marks
A triangle has sides of 13 cm and 13 cm and an area of 59.75 cm^2. Work out the acute angle between those two sides, to the nearest degree.
3
Probability Equation Questions3 marks
A bag holds 6 counters, r of them red. Two are taken without replacement and P(both red) = 1/5. Work out r.
4
Histograms3 marks
On a histogram the bar for 10 < x <= 15 has a frequency density of 2.4. How many values are in that class?
5
Surds3 marks
Rationalise the denominator of 16/sqrt(2), giving your answer in its simplest form.

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