Solve using sublimation

y=8x+13
-4x-5y=23

Rewrite the following without an exponent. (5/8)-1

Which is the equation of a line perpendicular to the line with the equation 3x+4y=8

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