Final answer:
To find the width of the rectangular field in terms of x, we can use the formula for the perimeter of a rectangle and solve for the width.
Step-by-step explanation:
To find the width of the rectangular field in terms of x, we need to calculate the perimeter of the rectangle and then subtract the length from it. The formula for the perimeter of a rectangle is given by P = 2(L + W), where P is the perimeter, L is the length, and W is the width. In this case, the perimeter is given as 1000m, so we can set up the equation as 1000 = 2(x + W), where x is the length and W is the width. To find the width in terms of x, we need to isolate W. First, divide both sides of the equation by 2 to get 500 = x + W. Next, subtract x from both sides to get 500 - x = W. Therefore, the width of the rectangular field in terms of x is 500 - x.