GREq
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Last updated 7:49 PM on 5/26/25
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13 Terms
1
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Area of a Trapezoid
(Base1 + Base2)/2 * h
2
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Degrees of a polygon
180(n-2)
3
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Degree measure of a congruent polygon
(180*(n-2))/n
4
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Area of a circle
𝛑r2
5
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Circumference of a circle
2𝛑r
6
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Arc Length of a circle
x/360 × 2𝛑r
angle/360*circumference
7
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Area of a sector of a circle
x/360 * 𝛑r2
angle/360*area
8
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Combinations
nCr = n! / r!(n-r)!
Combinations are where order doesn’t matter, just inclusion
9
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Permutations
nPr = n!/(n-r)!
Permutations are the one where you want to find every single possible combination
10
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Percent Change
new - old / old * 100
11
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Simple Interest Rate
V = P(1+(rt/100))
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Compound Interest Rate
V = P(1+r/100n)^nt
13
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Distance
sqrt((x2-x1)2+(y2-y1)2)
Note 
Flashcards (30)