Shared Flashcard Set

Details

GMAT math
rules to remember
25
Other
Not Applicable
01/05/2005

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Cards

Term
Even x Even
Definition
even
Term
Even x Odd
Definition
Even
Term
Odd x Odd =
Definition
Odd
Term
Even + Even = Even
Definition
Even
Term
Even + Odd =
Definition
Odd
Term
Odd + Odd = Even
Definition
Even
Term
In a right triangle with two 45 degree angles, what are the ratios?
Definition
s: s : square root of 2
Term
In a right triangle, if two sides are 7 and 25, what's the third?
Definition
24
Term
In a right triangle 30:60:90 degree angles, what are the ratios of the sides?
Definition
a: 2a: a X square root of 3
Term
In a right triangle with sides 15 and 36, how much is the third side?
Definition
39 (it's a 5: 12: 13 triangle)
Term
What happens when you divide an isoceles triangle in half down the middle?
Definition
You get a 30: 60: 90 triangle with sides of a, 2a and a x square root of 3
Term
Area of a square based on diagonal is?
Definition
1/2 d squared
Term
To find the interior angle of any polygone use what formula?
Definition
(n-2) X 180 degrees
Term
Volume of a cube =
Definition
e cubed
Term
volume of a rectangular solid =
Definition
l X w x h
Term
volume of a cylinder =
Definition
(PI X r-squared) X height
Term
total surface area of a cylinder
Definition
circumference X height + 2 (pi X r-squared)
Term
What is the third side if a triangle is 36: 45 ?
Definition
27
Term
What is the diagonal of a square side of 64?
Definition
64 x square root 2
Term
Total surface area of a cube
Definition
6e-squared
Term
Length of an arc is?
Definition
(2 x pi-r)* x/360
circumference * fraction of the circle
Term
If J can paint a house in six days and E can paint it in 8, how long will it take working together?
Definition
x/6 + x/8 = 1
Term
What's the avg among a sequence of equally spaced numbers?
Definition
The median
Term
The surface area of a cylinder is
Definition
2-pi-squared + 2-pi X radius X height
Term
volume formula for a cylinder
Definition
V = pi X r-squared X height
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