What is the radius of a circle whose equation is x^2 + y^2 + 8x - 6y + 21 =0

Consider the proof. given: segment ab is parallel to line de. prove: what is the missing statement in step 5?

Find the area of the triangle shown 3 by 6

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 in pounds, w, of the contents that liz will ship to her friend if she must use a medium flat-rate box. use the drop-down menus to explain your answer.