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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