What practical application did the Greeks find for the Pythagorean theorem?

Why did lincoln inform the confederacy that he would not e sending troops or weapons as food supplies were sent to fort sumter?

Which is relatively better: a score of 76 on a psychology test or a score of 22 on an economics test? scores on the psychology test have a mean of 90 and a standard deviation of 13. scores on the economics test have a mean of 52 and a standard deviation of 10.

What are the most populous and least areas of russia and why are some areas more heavily populated than others