Anyone ? ? will mark as brainliest

The center of the circumscribed circle lies on line segment and the longest side of the triangle is equal to the of the circle.

Jack has a piece of red ribbon that is two times as long as his piece of blue ribbon. he says that he can use two different equation to find out how long his piece of red ribbon is compared to his piece of blue ribbon is. is he correct? explain his reasoning

Solve this system of equations. 12x − 18y = 27 4x − 6y = 10