Mrs. Roberts plants tomatoes and radishes in the areas shown in the model below. A model with 7 rows of 5, representing 35 acres of tomatoes, and 7 rows of 4, representing 28 acres of radishes.

Which expression is equivalent to the sum of the two areas?
5 (7 + 4)
5 (7 + 7)
7 (5 + 4)
7 (4 + 7)

Two streets intersect at a 30- degree angle. at the intersection, the are four crosswalks formed that are the same length. what type of quadrilateral is formed by the crosswalks?

10 ! in a race, nick is 50 feet in front of jay after ten seconds. how fast can nick run, if jay can run 20 feet per second?

At the olympic games, many events have several rounds of competition. one of these events is the men's 100-meter backstroke. the upper dot plot shows the times (in seconds) of the top 8 finishers in the final round of the 2012 olympics. the lower dot plot shows the times of the same 8 swimmers, but in the semifinal round. which pieces of information can be gathered from these dot plots? (remember that lower swim times are faster.) choose all answers that apply: a: the swimmers had faster times on average in the final round. b: the times in the final round vary noticeably more than the times in the semifinal round. c: none of the above.