What polygon is formed by joining the points (1, -1), (4,-1), (-1, -3), and (7, -3)?

Which of the following correctly justifies statement four of the two column proof? a. corresponding angles theorem b. transitive property of equality c. vertical angle theorem d. substitution property of equality

Valentina is subtracting from . she finds the lcd to be 15y2. what is valentina's next step?

Standard deviation of 19,29,21,22,23