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mod 5 vocab
| Question | Answer |
|---|---|
| counterexample | a statement or example that shows a conjecture is false |
| cube root | one of three equal factors of a number. if a^3 = b, then a is the cube root of b. the cube root of 64 is 4 since 4^3 = 64 |
| inverse operations | pairs of operations that undo each other. addition and subtraction are inverse operations. multiplication and division are inverse operation |
| irrational numbers | a number that cannot be expressed as the ratio a/b, where a and b are integers and b=0 |
| natural numbers | the set of numbers used for counting |
| perfect cube | a number whose cube root is an integer . 27 is a perfect cube because its cube root is 3 |
| perfect square | a number whose square root is a whole number. 25 is a perfect square because its square root is 5 |
| principal square root | the positive square root of a number |
| radical sign | the symbol used to indicate a positive square root |
| real number | the set of rational numbers together with the set of irrational numbers |
| square root | one of the two equal factors of a number.if a^2= b, then a is the square root of b. A square root of 144 is 12 since 12^2=144 |
| truncating | a process of approximating a decimal number by eliminating all decimal places past a certain point without rounding |
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user-2001633