Daily Practice · Higher Plus

Daily Practice - Higher Plus

14th November 1995

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 = 49, y = 63. Work out y when x = 36.
2
Finding the Area of Any Triangle3 marks
A triangle has sides of 14 cm and 9 cm and an area of 44.55 cm^2. Work out the acute angle between those two sides, to the nearest degree.
3
Probability Equation Questions3 marks
A bag holds 8 counters, r of them red. Two are taken without replacement and P(both red) = 5/14. Work out r.
4
Histograms3 marks
A histogram has four 20-wide classes from 0, with frequency densities 0.5, 1, 2, 3. Which class contains the median?
5
Surds3 marks
Expand and simplify (5 + sqrt(11))(5 - sqrt(11)).

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