Which geometric construction depicts a ray?

Which system of linear inequalities is represented by the graph? !

Acircle has a circumference of 2 pi cm. which statement about the circumference and area is true? a comparison of the area and circumference is not possible since the area cannot be determined. the numerical values of the circumference and area of the circle are equal. the numerical value of the circumference is greater than the numerical value of the area. the numerical value of the circumference is less than the numerical value of the area.

45 was divided by a power of ten to get 4.5. what power of ten was it divided by? people 4.5