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{:[44(j+2k)=12],[22 k=-11 j+16]:}
Consider the system of equations. How many solutions 
(j,k) does this system have?
Choose 1 answer:
(A) 0
(B) Exactly 1
(C) Exactly 2
(D) Infinitely many

44(j+2k)amp;=1222kamp;=11j+16 \begin{aligned} 44(j+2 k) & =12 \\ 22 k & =-11 j+16 \end{aligned} \newlineConsider the system of equations. How many solutions (j,k) (j, k) does this system have?\newlineChoose 11 answer:\newline(A) 00\newline(B) Exactly 11\newline(C) Exactly 22\newline(D) Infinitely many

Full solution

Q. 44(j+2k)=1222k=11j+16 \begin{aligned} 44(j+2 k) & =12 \\ 22 k & =-11 j+16 \end{aligned} \newlineConsider the system of equations. How many solutions (j,k) (j, k) does this system have?\newlineChoose 11 answer:\newline(A) 00\newline(B) Exactly 11\newline(C) Exactly 22\newline(D) Infinitely many
  1. Analyze Equations: Let's analyze the system of equations:\newline{:\begin{align*}44(j+2k)&=12,\22k&=-11j+16\end{align*}:} We will first simplify the equations to make them easier to work with.
  2. Simplify First Equation: For the first equation, we divide both sides by 4444 to isolate the term (j+2k)(j+2k):\newline44(j+2k)=1244(j+2k) = 12\newline(j+2k)=1244(j+2k) = \frac{12}{44}\newline(j+2k)=311(j+2k) = \frac{3}{11}
  3. Simplify Second Equation: For the second equation, we divide both sides by 2222 to isolate kk:22k=11j+1622k = -11j + 16k=11j+1622k = \frac{-11j + 16}{22}k=j2+811k = -\frac{j}{2} + \frac{8}{11}
  4. Substitute kk into First: Now we have the simplified system of equations:\newline\begin{cases}j+2k=\frac{3}{11}\k=-\frac{j}{2}+\frac{8}{11}\end{cases}\newlineNext, we will substitute the expression for kk from the second equation into the first equation.
  5. Constant Equation: Substituting kk from the second equation into the first equation:\newlinej+2(j/2+8/11)=3/11j + 2(-j/2 + 8/11) = 3/11\newlinejj+16/11=3/11j - j + 16/11 = 3/11\newline0j+16/11=3/110j + 16/11 = 3/11
  6. No Solutions: We see that the jj terms cancel out, leaving us with a constant equation:\newline1611=311\frac{16}{11} = \frac{3}{11}\newlineThis is a contradiction because 1611\frac{16}{11} does not equal 311\frac{3}{11}. Therefore, there are no solutions to the system of equations.

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