Add and Subtract Matrices
-Let $A = \left[ \begin{array} { r r } 5 & - 4 \\ 5 & - 5 \\ - 8 & 7 \end{array} \right]$

question 69

Multiple Choice

Add and Subtract Matrices
-Let $A = \left[ \begin{array} { r r } 5 & - 4 \\ 5 & - 5 \\ - 8 & 7 \end{array} \right]$ and $B = \left[ \begin{array} { r r } - 7 & 6 \\ - 8 & 9 \\ 4 & - 4 \end{array} \right]$ . Find $A + B$

• A)
• \(\left[ \begin{array} { l l l } - 2 & 2 \\ - 3 & 4 \\ - 4 & 3 \end{array} \right]\)
• B)
• \(\left[ \begin{array} { r r } 12 & - 10 \\ 13 & - 14 \\ - 12 & 2 \end{array} \right]\)
• C)
• \(\left[ \begin{array} { r r } - 2 & 2 \\ 3 & - 5 \\ - 4 & - 3 \end{array} \right]\)
• D)
• \(\left[ \begin{array} { r r } - 2 & - 5 \\ - 3 & 4 \\ - 4 & 3 \end{array} \right]\)

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Definitions:

Engineering Drawing

A detailed drawing prepared by engineers to visually represent the specifications of a project or a part.

Manufacturer Drawing

A detailed diagram or blueprint created by the manufacturer that outlines the specifications, dimensions, and assembly of a product.

First Angle-Angle Projection

An orthogonal projection method used primarily in Europe, where the object is projected onto planes from the first quadrant.

Isometric Drawing

A method of visual representation of a three-dimensional object, drawn on a two-dimensional surface where the three principal axes appear equally foreshortened.