What is the area of the top surface of a circular manhole cover that has a radius of 30cm

2x minus y equals 6, x plus y equals negative 3

Mackenzie needs to determine whether the rectangles are proportional. which process could she use? check all that apply.

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.