"The Powers That Be" Vocabulary
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The sum of a number and its additive inverse is zero. Also called the opposite of a number.
Example: 5 and -5 are additive inverses of each other.
The number of times a base is used as a factor of repeated multiplication.
Side opposite to the right angle in a right triangle.
A real number whose decimal form is non terminating and non-repeating that cannot be written as the ratio of two integers.
Either of the two shorter sides of a right triangle; the two legs form the right angle of the triangle.
A theorem that relates the lengths of the sides of a right triangle. The sum of the squares of the lengths of a right triangle equals the square of the length of the hypotenuse.
A symbol that is used to indicate square roots.
A number that can be written as the ratio of two integers with a nonzero denominator.
A representation of real numbers as the product of a number between 1 and 10 and a power of 10, used
primarily for very large or very small numbers.
A way of describing how
precisely a number is written.
One of two equal factors of a nonnegative number. For example, 5 is a square root of 25 because 5•5 = 25. Another square root of 25 is -5 because (-5)•(-5) = 25. The +5 is called the principle square root of 25 and is always assumed when the radical symbol is
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