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GED math formulas > Formulas > Flashcards

Formulas Flashcards

1
Q

cube volume

A

V = s^2

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2
Q

standard form

A

Ax + By = C

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3
Q

radius of a circle

A

r = d/2

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4
Q

diameter of a circle

A

d = 2r

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5
Q

Area of a Rhombus

A

A = 1/2 ( d1 d2 )

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6
Q

Difference of squares

A

( A + B ) ( A - B ) = A^2 - B^2

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7
Q

Supplementary angle

A

180 degree. Linear pair is supplementary angle.

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8
Q

Complementary angle

A

90 degree.

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9
Q

Associative property

A

when 3 numbers being multiplied together.

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10
Q

Commutative property

A

states that the numbers can be multiplied in either order.

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11
Q

How many degrees is pi radian?

A

180

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12
Q

How many degrees is pi / 2 radian?

A

90

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13
Q

Degrees to radian formula

A

d x pi / 180

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14
Q

Internal angles in a 4 sided figure adds up to how many degrees?

A

360

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15
Q

Convert inches to feet

A

n / 12

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16
Q

convert feet to inches

A

n x 12

17
Q

Commutation formula

A

c = n! / r! (n-r)!

18
Q

Permutation formula

A

p = n! / (n-r)!

19
Q

what is parallel?

A

parallel lines do not intersect but they are the same.

20
Q

In probability when theres an “or” means?

A

Addition. we add the top part only and leave the bottom number the same. simplify if needed.

21
Q

In probability when theres an “and” means?

A

multiplication. you have to multiply the top and the bottom. simplify if needed.

22
Q

percent increase formula with rate

A

new = original ( 1 +/- R )

23
Q

In scientific notation, if you move the decimal to the left means what?

A

its a large number / positive number

24
Q

in scientific notation, if you move the decimal to the right means?

A

its a small number, it will be a negative number notation

25
Q

percent increase formula without rate

A

now - before / before x 100

26
Q

what is a prime number?

A

a number that can be multiplied by 1 and itself

27
Q

what is a quadratic equation?

A

ax^2 + bx + c = 0

28
Q

what is 0 divided by a number?

A

0

29
Q

what is a number divided by 0?

A

undefined

30
Q

In graphing when the line is a straight line pointing to the sky we call the slope…

A

undefined

31
Q

In graphing when the line is pointing to the right side we call the slope…

A

positive

32
Q

In graphing when the line is pointing to the left side we call the slope…

A

negative

33
Q

In graphing when the line is pointing to the sides in a straight line like this we call the slope…

A

0

34
Q

In math the word “product” indicates?

A

multiplication

35
Q

average formula

A

sum of terms / number of terms = average

GED math formulas (2 decks)

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