What is the distance between points a and b? 8 -7 -6 -5 4 -3 -2 -1 0 1 2 3 4 5 6 7 8 units

Does the point (1, sqrt 7) lie on circle shown.

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

Solve for x and select the correct answer