Katie traveled southwest a distance of 4000m on a bicycle in 5400s. what is her velocity? (speed = distance / time)
.074m/s
1.35m/s sw
1.11m/s sw
.74 m/s sw

From center station, a train departs every 30 minutes on the fast line and a train departs every 50 minutes on the state line. if two trains depart from center station at 8: 00 a.m., one on each of the two lines, what is the next time that two trains, one on each line, will depart at the same time?

Several mountains together form a mountain . a few of these combined form a mountain system. several systems combined form a mountain , which can stretch thousands of miles in length.

Use 4 to 5 complete sentences, explain the concepts of beats and how beats are produces.