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7th Unit 2
One Variable Equations and Inequalities
| Term | Definition |
|---|---|
| Adjacent angles | two non-overlapping angles that share a common vertex and exactly one ray |
| Basic needs | minimum necessities |
| Budget | a monthly or yearly spending and savings plan for an individual, family, business, or organization |
| Coefficient | a number that is multiplied by a variable(s) |
| Complementary angles | two angles whose degree measures have a sum of 90° |
| Compound interest for an investment | interest that is calculated on the latest balance |
| Congruent angles | angles whose angle measurements are equal |
| Constant | a fixed value that does not appear with a variable(s) |
| Coupon | an amount deducted from the total cost of an item |
| Equation | a mathematical statement composed of algebraic and/or numeric expressions set equal to each other |
| Family budget estimator | determines the monthly or annual base income that is needed for a family |
| Inequality | a mathematical statement composed of algebraic and/or numeric expressions set apart by an inequality symbol |
| Order of operations | the rules of which calculations are performed first when simplifying an expression |
| Positive rational numbers | the set of counting numbers that can be expressed as a fraction |
| Principal of an investment | the original amount invested |
| Rebate | an amount returned or refunded for purchasing an item or items |
| Sale | a reduced amount or price of an item |
| Simple interest for an investment | interest paid on the original principal in an account |
| Solution set | a set of all values of the variable(s) that satisfy the equation or inequality |
| Straight angle | an angle with rays extending in opposite directions and whose degree measure is 180° |
| Supplementary angles | two angles whose degree measures have a sum of 180° |
| Variable | a letter or symbol that represents a number |
| Vertical angles | a pair of non-adjacent, non-overlapping angles formed by two intersecting lines creating angles that are opposite and congruent to each other |
| Wage | the amount usually earned per hour or over a given period of time |