Write four hundred eighty-five thousandths as a decimal number.

What is the volume of the sphere shown below with a radius of 3?

Name each raycalculation tip: in ray "ab", a is the endpoint of the ray.

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?