Three highways connect the centers of three towns and form a triangle. a cell phone company wants to place a new cell tower so that it is the same distance from the centers of the three towns. how can the company find where to place the tower?

This is only possible when the triangle that is formed by the 3 towns is an equilateral triangle, so that the center will have the same distance in each town. Assuming an equilateral triangle, the center is at 1/3 of the height of the equilateral triangle 

imma come back to you hold on

every chemical equation adheres to the law of conservation of mass, which states that matter cannot be created or destroyed. therefore, there must be the same number of atoms of each element on each side of a chemical equation.