1 ball of wool is 125m, how many balls are there with 604m??

Solve by any method (graphing, substitution or linear combination)y = x - 82x + 3y = 1a) (2, -6)b) (5, -3)c) (4, -4)d) (0, -8)i figured it out. the answer is (5, -3)

Find the greatest common factor of the followig monomials 21u^5v,3u^4v^6, and 3u^2v^5

Square a has a side length of (2x-7) and square b has a side length of (-4x+18). how much bigger is the perimeter of square b than square a?and show all work! you so