Factorise 21x-14y
pls try answer its for my homework thx

This is so hard and it’s for a test

Which shows the correct lengths of side c in both scales? scale 1: 45 m; scale 2: 60 m scale 1: 60 m; scale 2: 45 m scale 1: 36 m; scale 2: 27 m scale 1: 27 m; scale 2: 36 m mark this and return save and exit

Which of the following circles have their centers in the third quadrant? check all that apply.