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You're a manager in a company that produces rocket ships. Machine AA and Machine BB both produce cockpits and propulsion systems. Machine AA ran for 2222 hours and produced 33 cockpits and 55 propulsion systems. Machine BB ran for 4444 hours and produced 66 cockpits and 1010 propulsion systems.\newlineAssume both machines produce cockpits at the same rate and both produce propulsion systems at the same rate.\newlineCan we use a system of linear equations in two variables to solve for a unique amount of time that it takes each machine to produce a cockpit and to produce a propulsion system?\newlineChoose 11 answer:\newline(A) Yes; it takes Machine AA and Machine BB 22 hours to produce a cockpit and 44 hours to produce a propulsion system.\newline(B) Yes; it takes Machine AA and Machine BB 44 hours to produce a cockpit and 22 hours to produce a propulsion system.\newline(C) No; the system has many solutions.\newline(D) No; the system has no solution.

Full solution

Q. You're a manager in a company that produces rocket ships. Machine AA and Machine BB both produce cockpits and propulsion systems. Machine AA ran for 2222 hours and produced 33 cockpits and 55 propulsion systems. Machine BB ran for 4444 hours and produced 66 cockpits and 1010 propulsion systems.\newlineAssume both machines produce cockpits at the same rate and both produce propulsion systems at the same rate.\newlineCan we use a system of linear equations in two variables to solve for a unique amount of time that it takes each machine to produce a cockpit and to produce a propulsion system?\newlineChoose 11 answer:\newline(A) Yes; it takes Machine AA and Machine BB 22 hours to produce a cockpit and 44 hours to produce a propulsion system.\newline(B) Yes; it takes Machine AA and Machine BB 44 hours to produce a cockpit and 22 hours to produce a propulsion system.\newline(C) No; the system has many solutions.\newline(D) No; the system has no solution.
  1. Equation 11: Let's denote the time it takes Machine A to produce a cockpit as xx hours and the time it takes to produce a propulsion system as yy hours. We can set up two equations based on the information given for Machine A:\newlineEquation 11: 3x+5y=223x + 5y = 22 (since Machine A produced 33 cockpits and 55 propulsion systems in 2222 hours).
  2. Equation 22: Similarly, we can set up an equation for Machine B, which ran for 4444 hours and produced 66 cockpits and 1010 propulsion systems:\newlineEquation 22: 6x+10y=446x + 10y = 44.
  3. System of Equations: Now, we have a system of two linear equations with two variables. To determine if there is a unique solution, we can check if the equations are multiples of each other. If they are, then the system has many solutions (dependent system). If not, then the system has a unique solution (independent system).
  4. Simplifying Equation 22: Let's simplify Equation 22 by dividing all terms by 22 to see if it matches Equation 11:\newline(6x+10y)/2=44/2(6x + 10y) / 2 = 44 / 2\newline3x+5y=223x + 5y = 22.\newlineThis is the same as Equation 11, which means the two equations are multiples of each other.
  5. Unique Solution: Since the two equations are identical after simplification, the system does not have a unique solution. Instead, it has infinitely many solutions because any solution that satisfies one equation will also satisfy the other.

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