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### 41 Cards in this Set

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 Area-Rhombus (1/2)d1 x d2* Median the middle term when written in increasing order Area of Triangle 1/2 (side) (altitude to side) (a+b)(a-b) (a^2*-b^2*) Mean average: sum of terms/#of terms Surface Area-Rectangular Solid 2lw+2wh+2lh EVEN - EVEN EVEN EVEN x EVEN EVEN ODD + EVEN ODD EVEN + EVEN EVEN (a-b)^2* (a^2*-2ab+b^2*) Mode the most common term ODD x EVEN EVEN Area-Circle r* ODD x ODD ODD Sum of the interior angles, where n is the number of sides Sum=(n-2)180 Midpoint formula (x1+x2/2, y1+y2/2)* Distance formula Sq. Rt. (x2-x1)^2+(y2-y1)^2* Combination ORDER DOESNT MATTER--R from a group of N (n!)/(n-r)!(r!) ODD - EVEN ODD of multiply Area-Trapeziod (1/2)h ( b1+b2)* Permutation ORDER MATTERS--R from a group of N (n!)/(n-r)! Diagonal-Cube Sq. Rt. 3s^2* Diagonal-Rectangular Solid Square Root l2+w2+h2 Surface Area-Cube 6s2* Fractional Circumference-Circle (x/360)2pir* Circumference-Circle 2pir* Volume-Rectangular Solid lwh Area-Parallelogram (length) ( heighth)~ Fractional Area-Cricle (x/360) r* (a+b)^2* (a^2*+2ab+b^2*) ODD - ODD EVEN Volume-Cube s^3* Surface Area-Cylinder 2(pir^2)+(2pir)h* If one individual can complete a job in H1* hours alone, and another individual can complete the same job in H2* hours alone, then the amount of hours it would take them to complete the job working together, T, is given by the equation: T/H1* + T/H2* = 1 QC--cant be D if... there are no variables If group of size N1* completes a job in H1* hours, and another group of size N2* completes the same job in H2* hours, then N1* x H1* = N2* x H2* Total Group People Group 1 + Group 2 - Both + Neither=Total ODD + ODD EVEN Volume-Cylinder (pir^2)h