The sum of two numbers is 8. The difference of the same two numbers is 4. What are the two numbers?

Create a real-life situation and create a system and show how it might be modeled algebraically with a system of equations (or inequalities) show all work include a few sentences explaining the situation, your variables of choice and what each represents, and how you would set it up and solve it algebraically. !

In the diagram, the measure of angle 9 is 85° which angle must also measure 85°?

Blank × 10-3 is 2,000 times greater than 1.9 × 10-6. it is also blank times greater than 9.5 × 10-4.