Explain how the position of the decimal point changes in a quotient as you divide by increasing powers of ten

The expression 42 plus 57 shows how much money nate spent at a store .which expression also shows how much money nate spend

Which best explains why this triangle is or is not a right triangle?

If the endpoints of the diameter of a circle are (8, 6) and (2,0), what is the standard form equation of the circle? a) (x + 5)2 + (y + 3)2 = 18 (x + 5)2 + (y + 3)2 = 3.72 (x - 5)2 + (y - 3)2 = 18 d) (x - 5)2 + (y - 3)2 = 32