Determine if the statement is true or false, and justify your answer. You may assume that A and B are n × n matrices. If A and B are diagonal matrices, then so is A − B. True. If i ≠ j, then Aij = Bij = 0, so (A − B)ij = 0, and A − B is diagonal. True. If i = j, then Aij = Bij = 0, so (A − B)ij = 0, and A − B is diagonal. False. If i ≠ j, then Aij = −Bij, so (A − B)ij = 2Aij, and A − B is not diagonal. False. If i = j, then (A − B)ij = Aij − Bij may not be zero, so A − B is not necessarily diagonal. False. If i ≠ j, then (A − B)ij = Aij − Bij may not be zero, so A − B is not necessarily diagon

80 the answer is 80

step-by-step explanation:

answer: (yeees, you need a poet.)

//blooming serenity//

beautiful in the morning

mysterious at night

wonderous nature souring

with all it's mystical might

the flower that blooms

to the fox that looms

nocturnal creatures

with various features

a blooming flower soon in sight

as a new little hatchling fears to take flight  

afraid to leave it's calming nest,

but dear little bird, mother knows best

as sure as there are stars in the sky,

life is not about who, where what, when or why-

it's the journey that follows

adventures we swallow

of   nature's deep wonders,

natural disasters and storm's thunders.

blooming serenity

life and nature, truly is heavenly.

-kerstien lehman

step-by-step explanation: