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anonymous
 one year ago
CHECK ATTACHMENT PLEASE
anonymous
 one year ago
CHECK ATTACHMENT PLEASE

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mathstudent55
 one year ago
Best ResponseYou've already chosen the best response.1Let's write our 2 original equations. \(x + 3y = 5\) Eq. 1 \(7x  8y = 6\) Eq. 2

mathstudent55
 one year ago
Best ResponseYou've already chosen the best response.1The problem is asking for a new system of equations which is obtained by keeping equation 2 unchanged, and equation 1 is replaced by the sum of equation 1 and a multiple of equation 2. The new system of equations will be: \(x + 3y = 5\) Eq. 1 kept unchanged \(\_\_\_\_\_\_\_\_\_\_\) A new equation replacing Eq. 2

mathstudent55
 one year ago
Best ResponseYou've already chosen the best response.1Now we need to read in the problem what the new equation that replaces equation 2 is. "If equation 2 is multiplied by 1, ..." We are told that equation 2 is multiplied by 1. We already were told that we needed to add a multiple of equation 2 to equation 1. Now we know that the multiple of equation 2 is obtained by multiplying equation 2 by 1. What is equation 2 (below) multiplied by 1 on both sides? \(7x  8y = 6\) Eq. 2

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0can you try it out? :) we can't do it for u

mathstudent55
 one year ago
Best ResponseYou've already chosen the best response.1@dom4958 Are you there?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0@dom4958 then try it out

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0well if I'm multiplying equation 2 by 1 it would still be the same wouldn't it? or would the  sign change next to 8y?

mathstudent55
 one year ago
Best ResponseYou've already chosen the best response.1Ok. What is any number multiplied by 1? What is 2 * 1 = 3 * 1 = pi * 1 = What does multiplying by 1 do to a number?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0@mathstudent55 nothing. it stays the same

mathstudent55
 one year ago
Best ResponseYou've already chosen the best response.1Exactly. Multiplying by 1 does not change a number, so multiplying a whole equation by 1 does not change the equation.

mathstudent55
 one year ago
Best ResponseYou've already chosen the best response.1That means when we multiply the second equation by 1, we end up with the second equation, just as it was originally.

mathstudent55
 one year ago
Best ResponseYou've already chosen the best response.1\(7x  8y = 6\) Eq. 2 multiplied by 1

mathstudent55
 one year ago
Best ResponseYou've already chosen the best response.1Now we add Eq. 1 to Eq. 2 multiplied by 1: \(~~~~~~~~x + 3y = 5\) Eq. 1 \(+~~~7x  8y = 6\) Eq. 2 multiplied by 1 \(\_\_\_\_\_\_\_\_\_\_\_\_\_\_\)

mathstudent55
 one year ago
Best ResponseYou've already chosen the best response.1Do you know how to add the equations in the response above?

mathstudent55
 one year ago
Best ResponseYou've already chosen the best response.1Add like terms that are placed one above the other. What is x + 7x = ?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0i think he's afk just waiting for the answer

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0sorry I'm back, give me a moment to read what you just said

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0would this be correct or am i off track? x+3y=5 + 7x−8y=6 ______________ 8x  5y =11???

mathstudent55
 one year ago
Best ResponseYou've already chosen the best response.1Now you replace equation 1 by this new equation, and equation 2 remains the same as it was. What is the new system of equations?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.08x  5y =11 Eq.1 7x−8y=6 Eq.2

mathstudent55
 one year ago
Best ResponseYou've already chosen the best response.1Original system New system \(x+3y=5\) Eq. 1 replaced by> \(8x  5y = 11\) \(7x−8y=6\) Eq. 2 remains as> \(7x  8y = 6\)

mathstudent55
 one year ago
Best ResponseYou've already chosen the best response.1Exactly. Now read the choices and choose the correct one.

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0B thank you so much. you made it really clear i appreciate it

mathstudent55
 one year ago
Best ResponseYou've already chosen the best response.1Great. You're welcome. Notice that you did all the work. I just guided you through it. When you have a problem like this one, break down the instructions into small steps and do one step at a time until you get it all done. Good job!

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0@mathstudent55 thanks, i honestly have no idea how people can memorize this. I'm good at every other subject but math just gets me lol

mathstudent55
 one year ago
Best ResponseYou've already chosen the best response.1Each of us has our strong and weak subjects. This way we can help each other.
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