M is the midpoint of AB, Q is the midpoint of AM, and T is the midpoint of QM. If the coordinates of A and B are a and b, find the coordinates of Q and T in terms of a and b

Acoffee shop orders at most $3,500 worth of coffee and tea. the shop needs to make a profit of at least $1,900 on the order. the possible combinations of coffee and tea for this order are given by this system of inequalities, where c = pounds of coffee and t = pounds of tea: 6c + 13t ≤ 3,500 3.50c + 4t ≥ 1,900 which graph's shaded region represents the possible combinations of coffee and tea for this order?

Typically a point in a three dimensional cartesian coordinate system is represented by which of the following answers in the picture !

Simplify the given expression leaving the answer in improper fraction form. 2/3+5/6