Use the Matrix Capabilities of a Graphing Utility to Reduce

question 10

Multiple Choice

Use the matrix capabilities of a graphing utility to reduce the augmented matrix corresponding to the system of equations,and solve the system.​ $$\left\{ \begin{aligned}x + 2 y + 2 z + 4 w & = 20 \\3 x + 6 y + 5 z + 12 w & = 53 \\x + 3 y - 3 z + 2 w & = - 18 \\6 x - y - z + w & = - 30\end{aligned} \right.$$ ​

• A)​(-4,1,7,-2)
• B)(-4,-1,7,2)
• C)(-4,1,-7,2)
• D)(-4,-1,-7,-2)
• E)(-4,1,7,2)

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Definitions:

Directly Related

A term describing entities or factors that are connected in a straightforward and immediate way, influencing each other's behavior or outcomes.

Firm Bidding

A procurement and contracting method where bidders submit fixed price proposals that cannot be altered after submission.

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Best-and-final offers are the last and most competitive bids or proposals requested from suppliers or contractors during a negotiation, after which a selection is made.

Clarify

To make a statement or situation less confused and more understandable.