How would you show algebraically that the quadrilateral with vertices at A(-1, 3) B(3, 5) C(4, 3) D(0, 1) is a rectangle.

34 cup. a serving of vegetable soup is 23 cup. the restaurant sold 20 servings of chicken noodle soup and 18 servings of vegetable soup. how many more cups of chicken noodle soup did they sell than cups of vegetable soup?

Mary used 1/7 of a spool of ribbon to complete 4 projects. she used the same amount of ribbon on each project. how much ribbon did she use on each project?

Find the roots of the equation below. x^2 - 6 + 9 = 0