Algebra Ch 1&2

2. a ratio between two sets of measurements
7. the closeness of a measured value to the actual or true value
8. an equation that is always true no natter what value is substituted for the variable.
9. the level of detail in a measurement and is determined by the smallest unit or fraction of a unit that you can reasonably measure.
10. figures have exactly the same shape but not necessarily the same size
12. a statement that two quantities are not equal.
14. overlapping region
17. an equation that states a rule for a relationship among quantities
18. a number on its own, or sometimes a letter such as a, b or c to stand for a fixed number
19. a ratio of two quantities with different units

1. When we substitute a specific value for each variable, and then perform the operations
3. combined region
4. is a comparison of two quantities by division
5. a letter or symbol used to represent a value that can change
6. a statements that make two ratios are equivalent
11. terms with same values
13. amount by which a measurement is permitted to vary from a specified value
15. a mathematical statement that two expressions are equal.
16. a rate with a second quantity of 1 unit