755 prompts matching "The z-score of a value that lies below the mean"
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Coordinate geometry exam question: quadrilateral vertices
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Distinguishing gradient sign: positive, negative, zero, undefined
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Solving a word problem using simultaneous equations
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Learn: Telling a rational number from an irrational one
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Common Mistakes: Why a rational number added to an irrational one stays irrational
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Learn: What makes two surds similar
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Learn: Simplifying root 72 into its simplest form
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Show All Working: Checking a rationalised answer by decimal approximation
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Learn: Solving an equation with a single square root term
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Show All Working: Finding a and b when a plus b root 2 equals a given surd
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Learn: What a binary operation actually is
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Show All Working: Evaluating a repeated operation such as a*(b*c)
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Show All Working: Showing a set is not closed by a single counter-example
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Show All Working: Using distributivity to simplify an expression
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Learn: What an identity element is
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Show All Working: An element with no inverse under a given operation
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Show All Working: Simplifying an expression with letters and indices
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Common Mistakes: Writing a root as a fractional index before simplifying
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Common Mistakes: An indicial equation solved by substitution
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Common Mistakes: Reading a logarithm from a table
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