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# Unit Two Words

### Unit 2 Vocabulary

Question | Answer |
---|---|

numbers 0,1,2,3,... | whole numbers |

-3,-2,-1,0,1,2,3 | integers |

a number a/b where a and b are integers and b does not equal 0 | rational number |

two numbers opposite from 0 on a number line but are on opposite sides of 0 | opposites |

has a hypothesis and conclusion | conditional statement |

a collection of distinct objects | set |

member of the set | element |

set with no elements | empty set |

set of all elements under consideration | universal set |

identity property statubg that the sum of a number a and 0 is a. the number 0 is | additive identity |

inverse property stating that the sum of a number a and its opposite is 0 | additive inverse |

rectangular arrangement of numbers in rows and columns | matrix |

written mXn | dimensions of matrix |

entry | element |

parts of an expression that are added together | terms |

number part of a term with a variable part is called | coefficient |

has a number part but no variable part | constant term |

terms that have the same variable parts | like terms |

if b^2=a then b is the | square root of a |

the square of an integer is called | perfect square |

set of all rational and irrational numbers is | real numbers |

a statement believed to be true but not yet shown to be true | conjecture |

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206036