Find the unknown side length, x. write your answer in simplest radical form. a. 15 b. 11 square root 2 c. 2 square root 121 d. 15 square root 5

We have two right isosceles triangles. Hypotenuse of that triangle is a  or you can use the Pythagorean theorem: 11² + 11² = c²
121 + 121 = c²
242 =c²          c=  Answer is the same: B) 11 square root 2

J= r + 9 because since jessica rode 9 more miles than roger, you add 9 miles to rogers mileage.