1,334 prompts matching "Cross-multiplying to solve an equation with fractions"
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WAEC Prep: Comparing two values from different normal distributions by z-score
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Learn: The probability that a normal variable lies between two values
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Quiz: The probability in the upper tail of a normal distribution
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WAEC Prep: When a Poisson distribution approximates a binomial one
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Spot My Mistake: When the normal distribution may approximate the binomial
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Learn: The coordinates of a point in three dimensions
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WAEC Prep: Why the square root of a negative number needs i
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WAEC Prep: Writing the square root of minus nine in terms of i
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WAEC Prep: Adding three complex numbers
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WAEC Prep: Dividing by a purely imaginary number
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WAEC Prep: The conjugate of a purely imaginary number
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WAEC Prep: The conjugate of a product of two complex numbers
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WAEC Prep: The modulus of a product of two complex numbers
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Quiz: The argument of a complex number
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WAEC Prep: The polar form written as r cos theta plus i r sin theta
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Quiz: Writing a complex number in polar form
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WAEC Prep: The square roots of a complex number
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WAEC Prep: The arguments of the n roots, spaced equally round the circle
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Learn: The cube roots of unity
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WAEC Prep: The chain rule applied twice in one problem
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