775 prompts matching "Checking a conjugate answer by multiplying back"
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Quiz: A rod resting against a wall, and the concurrence of its three forces
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WAEC Prep: A particle in equilibrium on a smooth inclined plane
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WAEC Prep: The conditions for a particle under three forces to be in equilibrium
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Spot My Mistake: Finding two unknown tensions from three forces in equilibrium
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WAEC Prep: Lami's theorem derived from the triangle of forces
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WAEC Prep: The statement of Lami's theorem
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Spot My Mistake: When Lami's theorem may be used, and when it may not
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WAEC Prep: A probability distribution shown as a bar chart
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WAEC Prep: The variance of a discrete random variable
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WAEC Prep: A random variable, and the values it may take
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Spot My Mistake: Why the probabilities in a distribution must sum to one
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WAEC Prep: Expanding p plus q, all to the power n, as a probability model
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WAEC Prep: The probabilities of nought, one and two successes read off an expansion
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WAEC Prep: The binomial expansion of a plus b all to the power n
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WAEC Prep: The probability of at most r successes
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WAEC Prep: The most likely number of successes in n trials
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WAEC Prep: The four conditions a binomial situation must satisfy
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Spot My Mistake: The probability of exactly r successes in n trials
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WAEC Prep: The probability of at least one event in a Poisson distribution
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WAEC Prep: A Poisson distribution taken over a different length of interval
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