Roger is trying to prove or disprove that a quadrilateral in a coordinate plane is a parallelogram. which strategy can roger use to reach a valid conclusion?

Consider the diagram. which line segment has the same measure as st? rx tx sr xs

Elena and her husband marc both drive to work. elena's car has a current mileage (total distance driven) of 15,000 and she drives 23,000 miles more each year. marc's car has a current mileage of 46,000 and he drives 9,000 miles more each year. will the mileages for the two cars ever be equal? explain.

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