1,334 prompts matching "Solving for x when three terms are in arithmetic progression"
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Worked Example: Using the sine rule on the triangle of forces
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WAEC Prep: A rigid body held in equilibrium by four forces
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WAEC Prep: The two conditions for a rigid body to be in equilibrium
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Practice: Why the forces must sum to nought in two perpendicular directions
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WAEC Prep: The polygon of forces for several forces in equilibrium
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Worked Example: Drawing the polygon of forces to scale
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Practice: Finding an unknown force from a closed polygon
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WAEC Prep: Why friction is called a self-adjusting force
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WAEC Prep: Calculating a moment as force times perpendicular distance
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Worked Example: The moment of a force about a point on its own line of action
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Explain Back: The units of a moment, and why they are newton metres
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WAEC Prep: The total moment of two forces about the same point
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WAEC Prep: A knot held in equilibrium by three strings
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Worked Example: Matching each force to the sine of the angle opposite it
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Explain Back: A probability distribution table for a discrete random variable
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Worked Example: Finding a particular term of a binomial expansion
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Explain Back: The binomial probability formula
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Explain Back: Testing whether data are Poisson by comparing mean and variance
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WAEC Prep: When a Poisson distribution approximates a binomial one
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Worked Example: The continuity correction when approximating a discrete distribution
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