Which of the following is the best estimated for the mass of all the people living on earth a. 2 x 10^8 b.1 x 10^9 c.2 x 10^10 d.3 x 10^11 e.4 x 10^12

explanation:

an enlarged virtual image is the answer

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.