Find the midpoint of the line segment joining points A and B. A(4,-7); B(2,3) The midpoint of the line segment is (Type an ordered pair.)

Ateacher wanted to buy a chair, a bookshelf, two tables and a desk. she spent $900 for all five items and the chair and the desk combined 70% of her total. if the bookshelf cost $50, how much did each of the tables cost?

In chemistry, n molecules of an ideal gas have pressure, volume, and tempersture that stand inthe following relation, where r is constant. solve the equation for n, the number of molecules. pv=nrt

To factor 4x2-25, you can first rewrite the expression as: