Daily Practice · Higher
Daily Practice - Higher
Grades 6-7 - Higher-tier method and manipulation.
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4th February 2013
- 1Surds2 marks
Write sqrt(45) in the form a sqrt(b), where b is as small as possible.
- 2Solving Quadratics3 marks
Solve x^2 + 5x + 6 = 0.
- 3Repeated Percentage Change3 marks
A price rises by 20% and then falls by 15%. Work out the overall percentage change, to 2 decimal places.
- 4Perpendicular Lines and the equation of a tangent2 marks
A line has gradient -3. Work out the gradient of a line perpendicular to it.
- 5Conditional Probability3 marks
21 students study Spanish and 9 of those also study Art. One Spanish student is picked at random. Work out the probability they study Art.
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