Y = 2x - 1 y=9x + 6
Does this system have a solution? If so, what is the solution? Explain.

helppp

hello im done her is the answer

\begin{gathered} y\text{ =9(}\frac{y+1}{2})+6 \\ 2y=9y+9+12 \\ -7y=21 \\ y=-3 \end{gathered}

x=\frac{-3+1}{2}=-\frac{2}{2}=-1

Therefore,

Substituting this value in the second equation, we have,

\begin{gathered} 2x=y+1 \\ x=\frac{y+1}{2} \end{gathered}

From the first equation, we have,

\begin{gathered} y=2x-1 \\ y=9x+6 \end{gathered}

  about 5.6 days

step-by-step explanation:

we can fill the given information into the decay equation and solve for the value of t at which half the sample remains.

the half-life is about 5.6 days.