Daily Practice · Higher Plus

Daily Practice - Higher Plus

13th March 1996

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 sqrt(x). When x = 36, y = 54. Work out y when x = 25.
2
Finding the Area of Any Triangle3 marks
A triangle has sides of 13 cm and 9 cm and an area of 41.37 cm^2. Work out the acute angle between those two sides, to the nearest degree.
3
Probability Equation Questions3 marks
A bag holds 9 counters, r of them red. Two are taken without replacement and P(both red) = 5/18. Work out r.
4
Histograms3 marks
A histogram has four 10-wide classes from 0, with frequency densities 0.5, 3, 1, 2. Which class contains the median?
5
Bounds3 marks
A rectangle is 23 cm by 15 cm, each correct to the nearest cm. Work out the upper bound of its area.

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