Daily Practice · Higher
Daily Practice - Higher
Grades 6-7 - Higher-tier method and manipulation.
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11th August 2010
- 1Conditional Probability3 marks
24 students study Spanish and 9 of those also study Art. One Spanish student is picked at random. Work out the probability they study Art.
- 2Cumulative Frequency2 marks
Four classes in order have frequencies 10, 8, 6, 4. Write down the cumulative frequency at the end of the third class.
- 3Fractional and Negative Indices3 marks
Work out 49^(3/2).
- 4Drawing Quadratic Graphs2 marks
For the curve y = x^2 + 8x - 12, work out y when x = -2.
- 5Speed and Density2 marks
A block has volume 195 cm^3 and density 2.5 g/cm^3. Work out its mass.
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