Joe has read 140 pages of his 300 page book what percentage has he read show work

Which matrix multiplication is possible?

Hi my sisters and brothers can tell me the answer because i don’t understand the question

Select the correct answer from the drop-down menu. subtracting 3xy^2 from 8xy^2 gives the same result as the expression. [tex]3xy ^{2} - 8xy ^{2} [/tex][tex] { - 7xy}^{2} - {2xy}^{2} [/tex][tex] {7xy}^{2} - {2xy}^{2} [/tex]