The dimensions of a square shaped room are altered so that one wall is increased by 9 feet and the other wall is decreased by 4 feet. The area of the resulting rectangular shaped room is 90 square feet. Find the original area of the room

the answer is 0.3175 hope that you ^w^

also you might actually want to put this picture up if you want people to solve it luckily i remember this question

option (b) is correct

step-by-step explanation:

to find the solution of this system, we need to convert it into reduced row-echelon form. we have,

after applying row operations r2 -> r2/2 and r3 -> r3/3, we get,