Daily Practice

Higher Plus

19th January 1972

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 = 5, y = 108. Work out y when x = 6.
2
Finding the Area of Any Triangle3 marks
A triangle has sides of 6 cm and 13 cm and an area of 19.50 cm^2. Work out the acute angle between those two sides, to the nearest degree.
3
Probability Equation Questions3 marks
A bag holds 7 counters, r of them red. Two are taken without replacement and P(both red) = 1/21. Work out r.
4
Histograms3 marks
A histogram has four 10-wide classes from 0, with frequency densities 1, 3, 2, 0.5. Which class contains the median?
5
Bounds3 marks
A rectangle is 27 cm by 10 cm, each correct to the nearest cm. Work out the upper bound of its area.

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