Atelevision and a dvd player cost a total of 1296. the cost of the television is two times the cost of the dvd player. find the cost of each item.

100 points, hi, i’m not sure how to get the equation from the graph and table.

The length of the line segment joining the midpoints of sides ab and bc of the parallelogram abcd is 10. find the length of diagnol ac

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?