Daily Practice

Higher Plus

15th April 1984

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 = 16. Work out y when x = 5.
2
Finding the Area of Any Triangle3 marks
A triangle has sides of 11 cm and 14 cm and an area of 66.68 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) = 21/55. Work out r.
4
Histograms3 marks
On a histogram the bar for 20 < x <= 25 has a frequency density of 2.4. How many values are in that class?
5
Bounds3 marks
x = 73 and y = 57, each correct to the nearest whole number. Work out the upper bound of x - y.

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