1,334 prompts matching "Cross-multiplying to solve an equation with fractions"
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Learn: Deciding whether a stated matrix calculation is possible at all
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WAEC Prep: Evaluating A squared minus 2A
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WAEC Prep: What Cramer's rule gives when the system is inconsistent
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Spot My Mistake: Checking a Cramer's rule solution by substituting back
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WAEC Prep: The adjoint of the identity matrix
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Spot My Mistake: Finding the adjoint of a 3 by 3 matrix
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Learn: The order of the steps in inverting a 3 by 3 matrix
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Quiz: Checking a 3 by 3 inverse by multiplication
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Spot My Mistake: Why the inverse must be applied on the correct side
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WAEC Prep: A three-unknown system arising from a word problem
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WAEC Prep: When the matrix method is worth the work for three unknowns
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Quiz: Why mass stays the same wherever the body is taken
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WAEC Prep: Resolving before compounding several forces
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Spot My Mistake: Compounding three forces acting at one point
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WAEC Prep: Two forces acting in opposite directions
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Learn: The component of a force along a stated direction
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Quiz: Recovering the original force from its two components
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WAEC Prep: The forces on a body suspended by a single string
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WAEC Prep: A rigid body held in equilibrium by four forces
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WAEC Prep: The three unknowns a rigid body problem usually carries
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