What’s the distance between (8,-5 ) and (6,4)

Determine whether the set of whole numbers is closed under addition. explain why the set is or is not closed. give an example.

Graph the equation by plotting point x=2

Thales was an ancient philosopher familiar with similar triangles. one story about him says that he found the height of a pyramid by measuring its shadow and his own shadow at the same time. if the person is 5-ft tall, what is the height of the pyramid in the drawing?