At a 200 meter swimming competition bill got a personal record of 45 secomda and time was 5 secomds faster then bill at the competition what was the speed of time for the swimmimg competition

Average speed of the swimmer is 4.44 m/s

Explanation:

As we know that the speed is the ratio of distance covered over time interval

so here we can say

so we know that

time taken to complete the trip is

now we have

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.