Which statements can be used to describe a ray? A) part of a line
B) Has two endpoints
C) Has no dimension
D) Has only one endpoint
E) Extends endlessly in both directions

What expression is equivalent to 42x-56y

Based on the graph, what is the initial value of the linear relationship? a coordinate plane is shown. a line passes through the y-axis at -2 and the x-axis at 3.

Atrain leaves little? rock, arkansas, and travels north at 90 kilometers per hour. another train leaves at the same time and travels south at 80 kilometers per hour. how long will it take before they are 680 kilometers? apart?