Question

considerando-se pode se concluir que x+y ÷z igual ​

Answer 1

ler manuscrito. bons estudos!

Answer 2

Resposta:

Alternativa 4)

Explicação passo-a-passo:

$\displaystyle A+B=\left[\begin{array}{ccc}x-2&1\\y&z\end{array}\right]+ \left[\begin{array}{ccc}3&2\\2z&x\end{array}\right] =\left[\begin{array}{ccc}x-2+3&1+2\\y+2z&z+x\end{array}\right] =\left[\begin{array}{ccc}x+1&3\\y+2z&z+x\end{array}\right] =\left[\begin{array}{ccc}3&3\\0&0\end{array}\right]$

x+1=3 => x=3-1=2

z+x=0 => z= -x= -2

y+2z=0 => y= -2z= -2(-2)= 4

(x+y)/z=(2+4)/(-2)= -6/2= -3