16.8 is 10% of what number? Someone help TWT

Is the square root of 4 plus the square root of 16 rational?

How many verticies does a triangular prims have

Which of these would have been most likely to have been a carpetbagger during the reconstruction era? a) a new york businessman who relocated to mississippi b) a former slave who was able to buy land in birmingham c) a carolina-born politician who supported the democratic d) a former confederate officer who owned a farm in memphis eliminate