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Similar triangles and proportions can be used to find lengths that would normally be difficult to measure.

To add a positive integer and a negative integer, subtract the smaller absolute value from the larger

Percents can be used to describe how a quantity has changed

Induction, Notation, Expressions, and Identities

Negative Numbers and Division by Zero

If the base of an exponential expression is a fraction, the exponent tells us how many times to write that fraction as a factor

An object in a fluid is buoyed up by a force equal to the weight of the fluid displaced

We translate the percent sentence into a percent equation and then find the unknown.

Heavy and light objects fall at the same rate !!

The law of gravity included a symbol for proportionality. In order to use this relationship for solving problems, we must remove the proportionality by ...