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Proportions and Unit Rate - Discovering Algebra 2.1 - 2.3
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Key Concepts:
Terms in this set (15)
ratio
a comparison of two numbers by division (or by relative size)
proportion
An equation stating that two ratios are equal
lowest terms
the form of a fraction in which the numerator and denominator have no common factor except 1
reciprocal
one of a pair of numbers whose product is 1: the reciprocal of 2/3 is 3/2
terminating decimal
a decimal number with a finite number of nonzero digits after the decimal point
rational number
a number that can be written as a ratio of two integers (e.g. 2/3 or 8/5, or 10/2)
repeating decimal
a decimal number with a digit or group of digits after the decimal point that repeats infinitely
variable
an unknown number or set of numbers
reciprocal
inverted fraction
design
the strategy used for the collection, measurement, and analysis of data
sample
a part of the population selected to represent the entire population
simulate
to model an experiment with another experiment so that the outcomes of the other experiment have the same probabilities as the outcomes of the original experiment
conversion factor
a ratio used to convert measurements from one unit to another
rate
a comparison between two quantities with different units
unit rate
a comparison of one quantity to a single unit of another quantity (e.g., 12.8 miles per 1 hour, 42 miles per 1 gallon)
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