If A - beginpmatrix 81pmatrix 858811endpmatrix Find A-B-C e n d p m a t r i x B-11 Dbeginpmatrix - 19D- beginpmatrix 9 - 7 811 e n d p m a t r i x

The correct option is A [ 9 amp;7; 19 amp; 11 ] If A=[ 6 amp; 1; 9 amp;1 ] B=[ 2 amp;0; 3 amp;5 ] and C=[ 1 amp;8; ...

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Standard X

Mathematics

Addition of Matrices

If A = beginp...

Question

If $A = (\begin{matrix} - 6 & - 1 9 & 1 \end{matrix}) B = (\begin{matrix} 2 & 0 - 3 & 5 \end{matrix})$ and $C = (\begin{matrix} - 1 & 8 7 & - 7 \end{matrix})$
Find A-B+C

$(\begin{matrix} - 9 & 7 19 & - 11 \end{matrix})$

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$(\begin{matrix} 9 & 7 19 & 11 \end{matrix})$

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$(\begin{matrix} 7 & - 11 9 & 19 \end{matrix})$

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$(\begin{matrix} 7 & 11 - 9 & - 11 \end{matrix})$

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Solution

The correct option is A
$(\begin{matrix} - 9 & 7 19 & - 11 \end{matrix})$

If $A = (\begin{matrix} - 6 & - 1 9 & 1 \end{matrix}) B = (\begin{matrix} 2 & 0 - 3 & 5 \end{matrix}) and C = (\begin{matrix} - 1 & 8 7 & - 7 \end{matrix})$

$A - B = (\begin{matrix} - 6 - 2 & - 1 - 0 9 - (- 3) & 1 - 5 \end{matrix}) = (\begin{matrix} - 8 & - 1 12 & - 4 \end{matrix})$

$A - B + C = (\begin{matrix} - 8 - 1 & - 1 + 8 12 + 7 & - 4 - 7 \end{matrix}) = (\begin{matrix} - 9 & 7 19 & - 11 \end{matrix})$

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If A=(−6−191)B=(20−35) and C=(−187−7) Find A-B+C

The correct option is A (−9719−11) If A=(−6−191)B=(20−35) and C=(−187−7) A−B=(−6−2−1−09−(−3)1−5)=(−8−112−4) A−B+C=(−8−1−1+812+7−4−7)=(−9719−11)

If $A = (\begin{matrix} - 6 & - 1 9 & 1 \end{matrix}) B = (\begin{matrix} 2 & 0 - 3 & 5 \end{matrix})$ and $C = (\begin{matrix} - 1 & 8 7 & - 7 \end{matrix})$
Find A-B+C