R MATH FORMULAS & SYMBOLS - GED
[Pages:1]parallelogram
A = bh
triangle
A = !! bh
2014
G E D ? P R O trapezoid G R A M
circle
M A T H Perimeter of a:
A
=
! !
h(b1
+
b2)
A = r2
FO R M U L A S & S Y M B O L S square rectangle triangle
P = 4s P = 2l + 2w P = s1 + s2 + s3
Circumference of a circle
C = 2r OR C = d; 3.14
Surface area and volume of a:
rectangular prism SA = 2lw + 2lh + 2wh
V = lwh
Use this guide to focus on applying, rather tharinghtmprisem morizinSAg=,phfo+ 2rBmulas and sVy=mBhbols for
test questions.
cylinder
SA = 2rh + 2r2
V = r2h
Mathematics Formula Explanations
pyramid cone
SA = ! ps + B
!
SA = rs + r2
V = ! Bh
!
V = ! r2h
!
This displays formulas relating to geometric measurement and cseprhtearien algebra coSnAce= p4tsr2 and is available onVth= e! 2r3014 GED?
test -- Mathematical Reasoning.
!
Mathematics Formula Sheet
(p = perimeter of base with area B; 3.14)
Area of a:
square rectangle parallelogram triangle
trapezoid
circle
A = s2
A = lw
A = bh
A = !! bh
A
=
! !
h(b1
+
b2)
A = r2
Perimeter of a:
square rectangle triangle Circumference of a circle
P = 4s P = 2l + 2w P = s1 + s2 + s3 C = 2r OR C = d; 3.14
Surface area and volume of a:
rectangular prism SA = 2lw + 2lh + 2wh
V = lwh
right prism cylinder pyramid cone sphere
SA = ph + 2B
V = Bh
SA = 2rh + 2r2
V = r2h
SA = ! ps + B
!
V = ! Bh
!
SA = rs + r2
V = ! r2h
!
SA = 4r2
V = ! r3
!
(p = perimeter of base with area B; 3.14)
Data
mean
median
mean is equal to the total of the values of a data set, divided by the number of elements in the data set
median is the middle value in an odd number of ordered values of a data set, or the mean of the two middle values in an even number of ordered values in a data set
Algebra
slope of a line
slope-intercept form of the equation of a line
!
=
!! !!
- -
!! !!
y = mx + b
point-slope form of the equation of a line
y ? y1 = m(x ? x1)
standard form of a quadratic equation
y = ax2 + bx + c
quadratic formula
Pythagorean theorem
-! ? !! - 4!"
!=
2!
a2 + b2 = c2
simple interest
I = Prt
Data
mean
mean is equal to the total of the values of a data set, divided by the number of elements in the data set
median
median is the middle value in an odd number of
ordered values of a data set, or the mean of the two
middle values in an even number of ordered values
? Symbol ToolinEaxdaptalasent ation
distance formula total cost
(I = interest, P = principal, r = rate, t = time) d = rt total cost = (number of units) ? (price per unit)
Tspheec2iAa0ll1gm4ebaGrtaEheDm? atetisctaol snycmobmoplsutinetrocofinll-tiani-nthsea-btloaonlkkinteomwntyapsetsh.e "? Symbol Tool." Use this guide to learn about entering
slope of a line
Symbol
Expl!an=a!!ti!!o--n!!!!
Symbol
Explanation
Symbol
Explanation
solfotphee-ienpqtieuracteiopnt
form of a
y = mx + b
line
function point-slope form of
y ? y1 = m(x ? x1)
the equgartieoan toef ra tlihnean or equal to
standard form of a
y = ax2 + bx + c
quadralteicsesqutahtiaonn or equal to
| absolute value ? multiplication ? division ? positive or negative
- minus or negative ( open or left parenthesis ) close or right parenthesis > greater than
quadratic formula not equal to
-! ? !=
!! - 4!" 2!
infinity
< less than
?Pythag2oreeaxnponent ("as2q+uba2 r=ecd2 ") theorem
?simple3inteerxepstonent ("Ic=uPbrted")
square root + plus or positive
= equals
(I = interest, P = principal, r = rate, t = time)
distance formula total cost
d = rt total cost = (number of units) ? (price per unit)
T CEOSNTFWIDEI TNHCE
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