Which of the following items involve a wedge?
Check all that apply.
A. A chisel
B. An axe
C. A knife.
D. A hairbrush

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.

a.) travels faster in solids because the particles are closer together.

air is a gas water is a liquid