It seems you need to move the decimal three times over, then you round the number. So the answer would be 5.5 x 10^3.
Answer:
I can't exactly remember how to either but I do know that they hypotenuse is 7 so z cannot be bigger than 7
Answer:Geographic featured that acted as norther borders of the Roman Empire at its height were: Rhine River, Danube River, Carpathian Mountains, and the Black Sea.
