3 years ago

What is the area of the figure? Round to the nearest tenth.

1 answer:

serg [7]3 years ago

7 0

I believe the answer is c sorry if i’m wrong

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Anit [1.1K]

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schepotkina [342]

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solniwko [45]

The entry in row 1, column 1 of $\mathbf{AB}$ is

$\begin{bmatrix}2&4\end{bmatrix}\begin{bmatrix}5\\6\end{bmatrix}=2\cdot5+4\cdot6=34$

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The entry in row 1, column 2 of $\mathbf{AB}$ is

$\begin{bmatrix}2&4\end{bmatrix}\begin{bmatrix}-9\\-4\end{bmatrix}=2\cdot(-9)+4\cdot(-4)=-34$

The second option is the correct answer.

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3 years ago