which of these matrices are zero matrices? select all that apply.

which of these matrices are zero matrices? select all that apply.
Answer
Explanation:
Step1: Recall zero - matrix definition
A zero - matrix is a matrix in which all the elements are zero.
Step2: Check first matrix
The matrix $\begin{bmatrix}0&0&0\0&0&0\0&0&0\end{bmatrix}$ has all elements equal to 0, so it is a zero - matrix.
Step3: Check second matrix
The matrix $\begin{bmatrix}0&0\0&0\end{bmatrix}$ has all elements equal to 0, so it is a zero - matrix.
Step4: Check third matrix
The matrix $\begin{bmatrix}0\0\0\end{bmatrix}$ has all elements equal to 0, so it is a zero - matrix.
Answer:
All of the given matrices are zero matrices.