7x+3y =-4 x-5y=-6 substitution explain

Find the solution(s) to x^2-14+49=0

The point of intersection of the diagonals of a rectangle is 4 cm further away from the smaller side then from the larger side of the rectangle. the perimeter of the rectangle is equal to 56 cm. find the lengths of the sides of the rectangle. 16 points answer quick

Whit h equation best represents this situation the number 98 increased by an unknown number equal to 120