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You're a manager in a company that produces rocket ships. Machine A and Machine B both produce cockpits and propulsion systems. Machine A ran for 22 hours and produced 3 cockpits and 5 propulsion systems. Machine B ran for 44 hours and produced 6 cockpits and 10 propulsion systems.
Assume both machines produce cockpits at the same rate and both produce propulsion systems at the same rate.
Can 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?
Choose 1 answer:
(A) Yes; it takes Machine A and Machine B 4 hours to produce a cockpit and 2 hours to produce a propulsion system.
(B) Yes; it takes Machine A and Machine B 2 hours to produce a cockpit and 4 hours to produce a propulsion system.
(C) No; the system has many solutions.
D No; the system has no solution.

You're a manager in a company that produces rocket ships. Machine A and Machine B both produce cockpits and propulsion systems. Machine A ran for 2222 hours and produced 33 cockpits and 55 propulsion systems. Machine B 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 A and Machine B 44 hours to produce a cockpit and 22 hours to produce a propulsion system.\newline(B) Yes; it takes Machine A and Machine B 22 hours to produce a cockpit and 44 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 A and Machine B both produce cockpits and propulsion systems. Machine A ran for 2222 hours and produced 33 cockpits and 55 propulsion systems. Machine B 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 A and Machine B 44 hours to produce a cockpit and 22 hours to produce a propulsion system.\newline(B) Yes; it takes Machine A and Machine B 22 hours to produce a cockpit and 44 hours to produce a propulsion system.\newline(C) No; the system has many solutions.\newline(D) No; the system has no solution.
  1. Set Up Equations: 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. Similarly, Machine B takes the same amount of time for each since they produce at the same rate. We can set up two equations based on the information given:\newlineFor Machine A: 3x+5y=223x + 5y = 22 (since it produced 33 cockpits and 55 propulsion systems in 2222 hours)\newlineFor Machine B: 6x+10y=446x + 10y = 44 (since it produced 66 cockpits and 1010 propulsion systems in 4444 hours)
  2. Identify Relationship: We notice that the second equation is exactly double the first equation. This means that if we divide the second equation by 22, we will get the first equation:\newline(6x+10y)/2=44/2(6x + 10y) / 2 = 44 / 2\newline3x+5y=223x + 5y = 22\newlineThis indicates that the two equations are not independent; they are multiples of each other.
  3. Equations Represent Same Line: Since the two equations are not independent, they represent the same line in a coordinate system. Therefore, there are infinitely many solutions to this system of equations, as any point on the line that these equations represent is a solution.
  4. Infinite Solutions: Given that there are infinitely many solutions, we cannot determine a unique amount of time it takes for each machine to produce a cockpit or a propulsion system based on the information provided. The answer to the question is (C)(C) No; the system has many solutions.

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