Identify the inverse matrix a^-1 and the solution matrix x of the system of equations

B is correct.

and

Explanation:

First we make system of equation and then make coefficient matrix A

Let $x represent cost of a burger.

Let $y represent cost of a fries.

Let $z represent cost of a cold drink.

Wiston pays $8 for an burger, an fries and a cold drink.

So, x+y+z=8 eq (1)

Tia buys 2 burger and a drink for $10.50

So, 2x+z=10.50eq (2)

Georger buys a burger, 2 fries and 2 drink

So, x+2y+2z=12eq (3)

Now we make coefficient matrix A

We have solution of matrix AX=B

Now we take pre multiply of A inverse

Now we find A inverse

Swap matrix

Now we apply row operation

Swap matrix

Now we apply row operation

Similalry, we will change above elelemt and change into Idenity matrix

So,

So,

the answer is here: : )

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87%

step-by-step explanation:

apex answer