Find the following matrices where $A = \begin{bmatrix} 7\\9\\6 \end{bmatrix}$ and $B = \begin{bmatrix} 0\\4\\-4 \end{bmatrix}$. a. $A + B$ b. $A - B$ c. $-4A$ d. $3A + 2B$ a. Select the correct choice below and, if necessary, fill in the answer box to complete your choice. A. $A + B = $ (Simplify your answer.)
Added by Miguel -Ngel S.
Close
Step 1
Step 1: A+B = 6+4 4+6 Show more…
Show all steps
Your feedback will help us improve your experience
Wendi Zhao and 85 other Algebra educators are ready to help you.
Ask a new question
Labs
Want to see this concept in action?
Explore this concept interactively to see how it behaves as you change inputs.
Key Concepts
Recommended Videos
Use matrices $A, B, C,$ and $D$ to find the indicated matrices. If the operations cannot be performed, explain why. $$A=\left[\begin{array}{ll}6 & -3 \\ 4 & -5\end{array}\right]$$ $$B=\left[\begin{array}{rr}3 & 12 \\ -9 & -6\end{array}\right]$$ $$C=\left[\begin{array}{rrr}-1 & 4 & -7 \\ 2 & -6 & 11\end{array}\right]$$ $$D=\left[\begin{array}{rrr}7 & 9 & -6 \\ -4 & 0 & 8\end{array}\right]$$ $$-C-2 D$$
Matrices; Systems of Linear Equations
Matrices: Definitions and Basic Operations
Use matrices $A, B, C,$ and $D$ to find the indicated matrices. If the operations cannot be performed, explain why. $$A=\left[\begin{array}{ll}6 & -3 \\ 4 & -5\end{array}\right]$$ $$B=\left[\begin{array}{rr}3 & 12 \\ -9 & -6\end{array}\right]$$ $$C=\left[\begin{array}{rrr}-1 & 4 & -7 \\ 2 & -6 & 11\end{array}\right]$$ $$D=\left[\begin{array}{rrr}7 & 9 & -6 \\ -4 & 0 & 8\end{array}\right]$$ $$D-4 C$$
For the given matrices $A$ and $B$ find each of the following. (a) $\boldsymbol{A}+\boldsymbol{B} \quad$ (b) $\boldsymbol{B}+\boldsymbol{A} \quad(\boldsymbol{c}) \boldsymbol{A}-\boldsymbol{B}$ $$A=\left[\begin{array}{rrr}3 & 4 & -1 \\0 & -3 & 2 \\-2 & 5 & 10\end{array}\right]$$ $$B=\left[\begin{array}{rrr}11 & 5 & -2 \\4 & -7 & 12 \\6 & 6 & 6\end{array}\right]$$
Systems of Equations and Inequalities
Properties and Applications of Matrices
Recommended Textbooks
Elementary and Intermediate Algebra
Algebra and Trigonometry
Transcript
18,000,000+
Students on Numerade
Trusted by students at 8,000+ universities
Watch the video solution with this free unlock.
EMAIL
PASSWORD