1,483 prompts matching "Real-life problem: Subtracting algebraic fractions, and the sign of the numerato"
Another worked example: Why rounding twice can drift from the true value
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Another worked example: Why unlike surds cannot be combined
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Another worked example: Using Pythagoras to find the hypotenuse
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Worked example: Multiplying the indices when a power is raised to a power
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Worked example: Finding the original amount after a percentage change
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Worked example: Constructing the perpendicular bisector of a line
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Worked example: The order of rotational symmetry
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Worked example: The range as a measure of spread
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Worked example: Solving by completing the square
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Worked example: The equation y equals mx plus c
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Worked example: The equation of a line through two points
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Worked example: The back bearing of a given bearing
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Worked example: Deriving the negative index from the division law
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Worked example: The reference angle for an angle beyond 90 degrees
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Worked example: Finding the height of a mast from its angle of elevation
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Worked example: Using the power law to simplify a logarithmic expression
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Worked example: The shape of a logarithmic graph
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Worked example: Bringing a negative number into the right residue class
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Worked example: The number of elements in a set
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Worked example: The formula for the number in a union
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