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### 17 Cards in this Set

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 Compound interest A = P(1 + R/C) ^TC Degrees of polygon 180(n-2) n = # of sides Arc length x/360 2*Pi *r Area of sector x/360 *pi*r^2 Combinations C = n! / r! (n-r)! Permutations P = n! / (n-r)! Probability of an event # ways fitting requirement / total # of possibilities A = P(1+ R/C) ^TC A= amount P= principle amount invested R = Rate C= times compounded T = Time in years Distance in graph formula Sqrt of (x2 - x1)^2 + (y2- y1)^2 Amount of investment A = P(1+ RT) work rates 1/workrate1 + 1/workrate 2 isoceles sides with angles 45: 45: 90 X: X : X*sqrt of 2 Ellipse area Pi * (radius1 x radius2) area of parallelogram B x H Simple Interest Formula Interest = principle x rate x time area of trapezoid 1/2 x (base1 + base2) x h amount of increase amount of increase/original whole x 100