answer and please don't be a clown with this i will give brainiest to the one who gives me the right answers

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

The measure of angle 0 is 600 degrees

The length of the line segment ac is 8x-9 what is the value of x