757 prompts matching "Using exact ratios to leave an answer in surd form (Show That / Hence Find)"
Worked example: Solving a 2 by 2 system by the matrix method
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Practice set: Cramer's rule as an alternative method
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Real-life Nigeria: Recognising a system that has no unique solution
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Practice set: Finding the roots from where the curve cuts the x-axis
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Real-life Nigeria: Reading the maximum or minimum value off the graph
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Word problem: A break-even point found from two drawn lines
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Worked example: Solving a quadratic graphically by adding a straight line
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Real-life Nigeria: Where a graphical method beats an algebraic one
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Worked example: Testing the vertices of the feasible region
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Real-life Nigeria: A production mix problem for a small business
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Exam timing: A timed set of linear programming questions
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Real-life Nigeria: Comparing two distributions from their ogives
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Worked example: The mean deviation of an ungrouped data set
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Practice set: The mean deviation of grouped data
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Real-life Nigeria: Mean deviation set beside standard deviation
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Real-life Nigeria: Choosing the right chart for a given set of data
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Worked example: Rounding a number whose leading digits are zeros
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Word problem: The error in a described market measurement
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Practice set: The greatest possible error in a rounded measurement
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Practice set: Finding the principal, rate or time from the interest
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