The length of a rectangle is 5 centimeters less than twice its width. Its area is 63 square centimeters. Find the dimensions of rectangle

What is the measure of angle tvu shown in the diagram below

I’ve been trying all day to figure this puzzle out. i need the work for it aswell. it is a factoring polynomials tarsia. the image is below.

Determine if the solution set for the system of equations shown is the empty set, contains one point or is infinite. x + y = 5 x + y = 7 {} 1 solution infinite