SAT math 2
Terms
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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