R is the midpoint of line segment of PQ. PR is 3x + 6 and RQ is 5x - 2. Find the following.
X:
PR:
RO:
PQ:

Savannah is painting a striped background for a mural on a wall that is 1515 yards long. she wants a total of 9696 stripes that are all the same width. which calculation should savannah use to decide how wide to make each stripe?

Find the greatest common factor of the followig monomials 21u^5v,3u^4v^6, and 3u^2v^5

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?