Papel sa lipunan bilang babae/lalaki​

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 answer is f1 and d2 because if you put equal force on those two points the beam would balance trust me on this

if the person is shown to have +90n, then ans is -10n.

if the person is shown to have -90n, then ans is +10n.