Which expression represents the inverse of the matrix below ? [1 - 3 - -1 - 2]

2y= 3 2 x−2 y = − 1 3 x + 1 y=− 3 1 x+1

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 base of a triangle is 8 1 3 meters and the height of the triangle is the fourth root of 16 meters meters. what is the area of the triangle?