When finding the perimeter of a figure on a grid, why do you not count the spaces inside the grid?

What is the difference of the fractions use the number line and equivalent fractions to find the answer -2 1 2 -1-34 i’m already started the quiz

The number of pages in the u.s. tax code exceeds the number of pages in the king james bible by 18,528. the combined number of pages in the tax code and the bible is 21,472

Which ordered pair (c,d) is a solution to the given system of linear equations- c+2d=13 -9c-4d=-15