A = [3 0 2 - 1] B = [2 8.6 3] what is matrix A + matrix D?

A + B = [5 8 2.6 2]

Explanation:

Adding matrices adds up by element to the corresponding element of the other matrix.

A + B = ...

= [3 0 2 - 1] + [2 8.6 3]

= [3+2 0+8 2+.6 - 1+3]

= [5 8 2.6 2]