Algebra Ch 1&2

5. a number on its own, or sometimes a letter such as a, b or c to stand for a fixed number
6. a ratio between two sets of measurements
7. the closeness of a measured value to the actual or true value
11. the level of detail in a measurement and is determined by the smallest unit or fraction of a unit that you can reasonably measure.
13. an equation that states a rule for a relationship among quantities
14. is a comparison of two quantities by division
16. a statement that two quantities are not equal.
17. an equation that is always true no natter what value is substituted for the variable.
18. a statements that make two ratios are equivalent

1. figures have exactly the same shape but not necessarily the same size
2. a mathematical statement that two expressions are equal.
3. When we substitute a specific value for each variable, and then perform the operations
4. amount by which a measurement is permitted to vary from a specified value
8. overlapping region
9. a letter or symbol used to represent a value that can change
10. a rate with a second quantity of 1 unit
12. combined region
15. terms with same values
19. a ratio of two quantities with different units