State whether the triangles are similar. if so, write a similarity statement and the postulate or theorem you used.

a. ; sas~
b. ; sas~
c. ; sss~
d. the triangles are not similar.

Which of these equations, when solved, gives a different value of x than the other three? a9.1 = -0.2x + 10 b10 = 9.1 + 0.2x c10 – 0.2x = 9.1 d9.1 – 10 = 0.2x

Hector and alex traded video games. alex gave hector one fourth of his video games in exchange for 6 video games. then he sold 3 video games and gave 2 video games to his brother. alex ended up with 16 video games. how many video games did alex have when he started?

Solve the system of equations using the substitution method. {y=−3x+7x=−2y−16 enter your answers in the boxes.