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Which of these scientists is credited with the discovery of x-rays?
Simultaneous Equations
A set of equations containing multiple variables that are solved together since the solution to one equation depends on the solutions of the others.
Additional Costs
Expenses that are not originally planned or budgeted, arising unexpectedly during the production or execution process.
Joint Cost
The cost of the input and process that yields two or more products in fixed proportions as a result. For example, the cost of the barrel of oil and of splitting it into gasoline and motor oil is a joint cost.
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