Algebra 2 Equations

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Last updated 9:21 PM on 5/23/26
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19 Terms

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SOH

sin = opposite/hypotenuse

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CAH

cos = adjacent/hypotenuse

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TOA

tan = opposite/adjacent

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Compound Interest Formula

A = P(1+r/n)^nt

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CI Formula A…

Amount

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CI Formula P…

Principal

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CI Formula r…

Interest Rate (decimal)

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CI Formula n…

Number of times interest is compounded per year

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CI Formula t…

Time (years)

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General Exponential Model

f(x) = ab^x

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GE Model a…

the initial amount

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GE Model b…

the constant ratio of growth/decay

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logarithms

log[a]x = y is equal to a^y = x

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the a of logs must be…

greater than zero, but not equal 1

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the y of logarithms…

cannot equal 0

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Quadratic Formula

-b ± the square root of (b² - 4ac) all divided by 2a

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Vertex Form of Parabolas

y = a (x-h)² + k

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VF’s h…

the x-coordinate of the vertex

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VF’s k…

the y-intercept of the vertex