How many lines of symmetry does a regular quadrilateral have? A. 4
B. 5
C. 6
D. 7

Write the expression in simplified radical form. show all steps and work including any foil method work. (hint: use the conjugate. no decimal answers.) (9-2√3)/(12+√3)

2y= 3 2 x−2 y = − 1 3 x + 1 y=− 3 1 x+1

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.