The area of a square is 81. find the perimeter of the square.

Ling is using fraction strips to add 2/3 and 7/12's the sum is one whole plus how many twelves?

Jake volunteers to out his younger brother's basketball team in his free time. one of his tasks is to ensure that all the basketballs have enough air in them. given that a properly inflated basketball measures 8.8 inches across, what is the total volume of air inside six of jake’s basketballs? assume that the wall of each ball is infinitely thin.

Solve the inequality 47.75 + x 50 to determine how much more weight can be added to li's suitcase without going over the 50-pound limit. what is the solution set?