Once the contribution margin is determined, it can be used to calculate the break-even point in volume of units or in total sales dollars.
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Formula to calculate breakeven point is as follows: Break even point = Fixed cost / contribution margin Contribution margin = Sales - Variable cost
Although he made enormously important contributions to physics, his contribution to mathematics was limited. The non-existence of a fixed frame of reference is probably the most significant mathematical contribution - as opposed to contribution to physics.
An important contribution by Menelaus of Alexandria was his works on geodesics.
A point lies on a line if the coordinates of the point satisfy the equation of the line.
Aristotle considered geometry one of the most important sciences, and did some work with point and line planar geometry. He also used geometry as a way into sciences where he did more work, like optics and mechanics.