Write down four reasons why plastic is put around electrical wires?

Plz help me

1)  is to prevent accidental contact with other conductors of electricity

2) to prevent getting shocked

3) Plastic helps dissipate the heat as well as prevent the wire from getting too hot and causing fire.

4) Without plastic, hot and neutral wires cannot be run in the same conductor or same wire

Explanation:

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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.

15.3 cos 65 degrees trig