The model shows the expression 20 + 16. A model with 4 rows of 5 squares and 4 rows of 4 squares. Which expression is equivalent to this sum? 4 (5) + 4 4 + 5 + 4 4 (5 + 4) 5 (4 + 4)

Given that de, df, and ef are midsegments of △abc, and de=3.2 feet, ef=4 feet, and df=2.4 feet, the perimeter of △abc is .

Liz is shipping a package to her friend. the maximum weight of a medium flat-rate box is 20 pounds, including the box which weighs 6 ounces. write and solve an inequality to describe the possible weight ,w, of the contents that liz will ship to her friend if she must use a medium flat-rate box.

X/y + 4y/x divided by x/y - 2y/x explain as in depth as you can how you simplfied the fractions. i don't know where to start on this : /