When adding matrix a to the additive identity matrix, the result is

Adding anything to an additive identity results in the original thing. Here, ...

... [A] + [additive identity matrix] = [A] . . . . . . matrix A

The result is matrix A.

The point of the additive identity is that it does not change anything when you add it.

$18 was the price of the t-shirt

step-by-step explanation:

60.9774

step-by-step explanation:

because when you add 47.6 plus 7.32 equals 54.92

and when you add .0574 + 6= 6.0574

and when you add 54.92 and 6.0574 you get the answer of 60.9774.

plzz mark brainlest last one got deleted. cause i didn't explain it but i did but i understand what the mod meant