-11 because first you add -4 and -7 because when you subtract negatives you add I hope I helped and have a good day
32 models of 100. you are prone for elementary questions in all subjects and i accept that very dearly, thank you
EG and FH are diagonals of the rhombus and the bisect each other at the centre to for a righ angle triangle with the side of the rhombus as the hypothenus.
By pythagoras theorem,