Right triangle ABC is located at A (−1, −2), B (−1, 1), and C (3,1) on a coordinate plane. What is the equation of a circle A with radius segment AC?

Awrestling tournament begins with 128 competitors. in the first round, each competitor has 1 match against another wrestler. the winner of each match moves on to the next round until there is a winner. write a sequence in which the terms represent the number of players still in the tournament at the end of each round. describe the sequence? how many rounds are in the tournament?

The angle of a triangle are given as 6x,(x-3), and (3x+7). find x then find the measures of the angles

Another type of subtraction equation is 16-b=7. explain how you would sole this equation then solve it.