Can someone help me with this problem?

Mathematics

2 answers:

Firlakuza [10]3 years ago

5 0

I’ve attached 2 different methods,
What every is easier for you to follow
Hope this helps!!

Diano4ka-milaya [45]3 years ago

3 0

Can you show the answer choices but I believe is 18

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What is a11. A12. A21. A22

Ierofanga [76]

Answer:

$a_{11} =-1\\a_{12} =3\\a_{21} =5\\a_{22} =3/2\\$

Step-by-step explanation:

$2X-\left[\begin{array}{ccc}-4&8\\2&-2\end{array}\right] =\left[\begin{array}{ccc}2&-2\\8&5\end{array}\right]\\X=\frac{1}{2} (\left[\begin{array}{ccc}-4&8\\2&-2\end{array}\right] +\left[\begin{array}{ccc}2&-2\\8&5\end{array}\right])\\X=\frac{1}{2} (\left[\begin{array}{ccc}-4+2&8-2\\2+8&-2+5\end{array}\right] )\\X=\frac{1}{2} (\left[\begin{array}{ccc}-2&6\\10&3\end{array}\right] )\\X= (\left[\begin{array}{ccc}\frac{1}{2}(-2)&\frac{1}{2}(6)\\\frac{1}{2}(10)&\frac{1}{2}(3)\end{array}\right] )\\$