A parallelogram has sides of length 19mm, 19mm, 7mm. What is the length of the fourth side of the parallelogram?

Let r = 3. what is the value of r + 58?

High schoolmathematics 5 points keith is the leading goal scorer for a team in an ice hockey league. last season, he scored 42 goals in 82 games. assuming he scores goals at a constant rate, what is the slope of the line that represents this relationship if the number of games is along the x-axis and the number of goals is along the y-axis?

Using the side-splitter theorem, daniel wrote a proportion for the segment formed by luke segment de. what is ec?