Let a have a row all of whose entries are zero. explain why the product ab also has a zero row.

Reason is Matrix Multiplication Technique

Step-by-step explanation:

Matrix Multiplication: In matrix multiplication each element of a row is multiplied with each element of a column. So, row with all its zero entries is multiplied with all of the columns and making corresponding entries as zeros as well.

Therefore, A with a row having all zero entries also produces a row with all zero entries during multiplication with any matrix B.

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step-by-step explanation:

y + 11 = (1/4)(x + 16)

step-by-step explanation: