Thermal conductors

A have low latent heat
B. have lots of air pockets
C. are often metals
D. have high conductivity
E. have low conductivity

can pick multiple

C. are often metals

and

D. have high conductivity

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.

answer: strength i guess

explanation: