699 prompts matching "how many ways can a president and secretary be chosen from 8 people"
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Power set of a three-element set
I am in SS 1. I'm going to explain listing the full power set of a three-element set, incl
Quiz me rapid-fire on set notation symbols
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Finding the nth term of an arithmetic sequence
I am in SS 1. I'm going to explain finding the nth term formula of an arithmetic sequence,
Finding the common difference from given terms
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Finding the common ratio from given terms
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Sum of the first n terms of a geometric series
I am in SS 1. I'm going to explain using the formula Sn = a(r^n - 1)/(r - 1) to find the s
Finding a term given the sum of a series
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Sigma notation for a sum
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Deriving the arithmetic series sum formula
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Deriving the geometric series sum formula
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Finding which term of a sequence equals a given value
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Common student mistakes with progression formulas
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Distance formula with negative coordinates
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Gradient of a line joining two points
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Gradient from a linear equation
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Finding the point of intersection of two lines
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Dividing a line segment in a given ratio
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Area of a triangle from three coordinates
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Finding the equation of a line parallel to the x-axis or y-axis through a point
I am in SS 1. I'm going to explain finding the equation of a line through a given point th
Coordinate geometry proof: right-angled triangle
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