Solve Using a System of Two Equations in Two Unknowns

question 34

Multiple Choice

Solve using a system of two equations in two unknowns.
-Dmitri needs 5 liters of a 7% solution of sulfuric acid for a research project in molecular biology. He has two unlimited supplies of sulfuric acid solution: 5% solution and 10% solution. How many
Liters of each solution should Dmitri use?

• A) 5% solution: 3.5 L, 10% solution: 1.5 L
• B)5% solution: 3 L, 10% solution: 2 L
• C) 5% solution: 2.5 L, 10% solution: 2.5 L
• D)5% solution: 2 L, 10% solution: 3 L

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Definitions:

Predictability

The ability to accurately forecast the outcome of a process or the occurrence of an event based on current knowledge or past experience.

Normal Distribution

A probability distribution that is symmetric around the mean, showing that data near the mean are more frequent in occurrence than data far from the mean.

Human Traits

Characteristics or qualities that define individual human beings, ranging from physical properties to personality attributes.

Intelligence

The ability to acquire and apply knowledge and skills, including reasoning, problem-solving, and adapting to new situations.