Find the L. C.M of 1842 and 90

Terri makes a quilt using three sizes of fabric squares the side lenght of each fabric square is the square root of the area

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?

Sum of the interior angles of a pentagon