Formulas Flashcards
cube volume
V = s^2
standard form
Ax + By = C
radius of a circle
r = d/2
diameter of a circle
d = 2r
Area of a Rhombus
A = 1/2 ( d1 d2 )
Difference of squares
( A + B ) ( A - B ) = A^2 - B^2
Supplementary angle
180 degree. Linear pair is supplementary angle.
Complementary angle
90 degree.
Associative property
when 3 numbers being multiplied together.
Commutative property
states that the numbers can be multiplied in either order.
How many degrees is pi radian?
180
How many degrees is pi / 2 radian?
90
Degrees to radian formula
d x pi / 180
Internal angles in a 4 sided figure adds up to how many degrees?
360
Convert inches to feet
n / 12
convert feet to inches
n x 12
Commutation formula
c = n! / r! (n-r)!
Permutation formula
p = n! / (n-r)!
what is parallel?
parallel lines do not intersect but they are the same.
In probability when theres an “or” means?
Addition. we add the top part only and leave the bottom number the same. simplify if needed.
In probability when theres an “and” means?
multiplication. you have to multiply the top and the bottom. simplify if needed.
percent increase formula with rate
new = original ( 1 +/- R )
In scientific notation, if you move the decimal to the left means what?
its a large number / positive number
in scientific notation, if you move the decimal to the right means?
its a small number, it will be a negative number notation
percent increase formula without rate
now - before / before x 100
what is a prime number?
a number that can be multiplied by 1 and itself
what is a quadratic equation?
ax^2 + bx + c = 0
what is 0 divided by a number?
0
what is a number divided by 0?
undefined
In graphing when the line is a straight line pointing to the sky we call the slope…
undefined
In graphing when the line is pointing to the right side we call the slope…
positive
In graphing when the line is pointing to the left side we call the slope…
negative
In graphing when the line is pointing to the sides in a straight line like this we call the slope…
0
In math the word “product” indicates?
multiplication
average formula
sum of terms / number of terms = average
