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Chapter 6 Math Vocab
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Gravity
Terms in this set (20)
ratio
A comparison of two quantities by division ex:) 3:4
rate
A ratio of two quantities having different KINDS of units ex) 60 miles in 3 hours
unit rate
When a rate is simplified so that it has a denominator of 1
proportional
Quantities that have a constant ratio or rate
nonproportional
Quantities that do not have a constant rates or ratios
constant of proportionality
the constant ratio between quantities. Also called a unit rate.
proportion
when 2 ratios are equal
scale drawing
a two-dimensional drawing (2D) used to represent an object too large or too small to be drawn to actual size. ex) model of airplane
scale model
a three-dimensional model (3D) used to represent an object too large or too small to be drawn to actual size. ex) model of airplane
scale
the ratio of the dimensions of the drawing or mode to the actual object. ex) 1 inch = 3 feet
scale factor
the scale at its simplest fractional form. Both the numerator and the denominator must be in the same units!
Percent
a ratio that compares a number to 100. "Per" "cent" means "for every" "hundred"
Percent Proportion
a ratio comparing part of a quantity to the whole quantity
Percent Equation
the percent proportion written as an equation with the % as a decimal
discount
the amount by which the regular price of an item is reduced
sales tax
a percentage of a sale price. The sales tax is added to the sale.
interest
the amount of $ paid or earned for the use of $. For a saving account, interest is earned. For a credit card, interest is paid.
Percent of change
the percent an amount has increased or decreased in relation to the original amount.
% of Increase
a positive % change
% of decrease
a negative % change
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