How do you substitute 4(x) into the inequality 1/2x+5y-10< 0 to find the possible value of y?

Find the solutions for a triangle with a =16, c =12, and b = 63º

Can someone tell me if this is perpendicular? !

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.