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Gravity
Terms in this set (31)
Area of a Parallelogram
A = base(height)
Area of a Triangle
A = 1/2(base)(height)
Area of a Trapezoid
A = 1/2(height)(base + base)
Area of a Rectangle
A = length(width)
Area of a Circle
A=π(radius²)
Perimeter of a Rectangle
P=2length+2width
Circumference of a Circle
C = pi(diameter)
Volume of a Rectangular Prism
V=lwh
Volume of a Triangular Prism
V = Area of Base(prism height)
V = (1/2bh)height of prism
Volume of a Cylinder
V=πr²h
Surface Area of a Rectangular Prism
Top
Bottom
Side
Side
Front
Back
SA= 2LW + 2LW + 2WH
Surface Area of Triangular Prism
Triangle
Triangle
Rectangle
Rectangle
Rectangle
Surface Area of a Cylinder
S = 2πr²+2πrh
positive + positive =
positive
negative + negative =
negative
When adding numbers with different signs
Subtract and keep the sign of the bigger number
Simple Interest
I = principal(rate)(time)
**change percent to a decimal first and time must be in years
Constant of Proportionality
The constant ratio between two quantities
constant = y/x
To change a fraction to a decimal
divide the numerator by the denominator then multiply by 100
To change a decimal to a percent
multiply by 100 OR move the decimal 2 places to the right
To change a percent to a decimal
divide by 100 or move the decimal 2 places left
Percent Proportion
part/whole = %/100
Tax or Tip or Commission
Multiply the amount by the % written as a decimal then add.
12.00 with 8% tax
12(0.08) = 0.96 12 + 0.96 = $12.96
Discount
Multiply the amount by the % written as a decimal then subtract.
12.00 with 10% discount
12(0.10) = 1.20 12 - 1.20 = &10.80
Percent of Change
1. subtract to find the amount of change
2. write a proportion as shown
amount of change/original = x/100
positive(positive) =
positive
negative(negative) =
positive
positive(negative) =
Negative
positive/positive =
positive
negative/negative =
positive
negative/positive =
negative
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