Solve Using a System of Two Equations in Two Unknowns

question 1

Multiple Choice

Solve using a system of two equations in two unknowns.
-A chemist needs 100 milliliters of a 70% solution but has only 66% and 86% solutions available. Find how many milliliters of each that should be mixed to get the desired solution.

• A) 90 milliliters of 66%; 30 milliliters of 86%
• B) 90 milliliters of 66%; 20 milliliters of 86%
• C) 80 milliliters of 66%; 20 milliliters of 86%
• D) 20 milliliters of 66%; 80 milliliters of 86%

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The vast, deep waters of the world ocean, lying beyond the continental shelves and characterized by a wide variety of marine species and ecosystems.

Nonrenewable Natural Resources

Natural resources such as coal, oil, and natural gas that cannot be replenished within a human lifespan once consumed.

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A scenario where the quantity of a good or resource available does not change in response to changes in price.

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The entitlement to control, benefit from, and transfer ownership of resources including land, tangible goods, and creations of intellect.