a 30 inch tv has an aspect ratio of 4:3. A tv that is 4 ft wife and 3 ft tall has a diagonal length of 5ft. How can you use this information to figure out the width of a 30 inch tv? Explain.

Afarmer has a large field that is x feet in length. he wants to fence in a rectangular section in the middle of the field , leaving a length of 100 feet of open field behind each end of the fenced rectangle.he also wants the width of the fenced-in space to be 100 feet less than its length. find the expressions to represent the length and width of the fenced section of the field