755 prompts matching "The variance of a discrete random variable"
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Equation of a line given gradient and one point
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Equation of a line through two given points
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Area of a triangle from three coordinates
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Finding where a line crosses the x-axis and y-axis
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Length of a line segment on a graph
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Finding the centre and radius from a circle's equation
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Gradient as a rate of change interpretation
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Finding an unknown coordinate using the gradient formula
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Equation of a line with a given y-intercept and passing through a point
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Expanding a product of two brackets
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Expanding a product of three brackets
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Changing the subject with a square or square root
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Factorising a quadratic with a coefficient in front of x squared
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Explaining the difference between an expression and an equation
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Show All Working: Classifying a mixed list of numbers as rational or irrational
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WAEC Prep: Ordering a list of surds by size
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Show All Working: Deciding whether two given surds are equal without a calculator
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Common Mistakes: Expressing root 50 as a multiple of root 2
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Learn: Why a surd is never left in the denominator
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Final Revision: Expressing a rationalised answer in the form a root b over c
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