What is the velocity of a train traveling 1000 meters Northeast in 20 hours?

Explanation:

distance travelled = 1,000 meters

time = 20 hours

velocity = distance / time

             = 1,000 meters

                  20 hours

             = 50 meters/hour

i think it because equal matrices have equal dimensions, only square matrices can be symmetric. for all indices and . every square diagonal matrix is symmetric, since all off-diagonal elements are zero. in linear algebra, a real symmetric matrix represents a self-adjoint operator over a real inner product space.

the arctic is a region of the planet, north of the arctic circle, and includes the arctic ocean, greenland, baffin island, other smaller northern islands, and the far northern parts of europe, russia (siberia), alaska and canada.