Mathematics
15 Online
OpenStudy (darthvader2900):
Help please
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DivineSolar (divinesolar):
I am here.
OpenStudy (darthvader2900):
Wow you were here before I was! :D
DivineSolar (divinesolar):
Right now I am focused on helping you. ^-^.
OpenStudy (darthvader2900):
DivineSolar (divinesolar):
Okay so do you know the first step to solving a system of equations?
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OpenStudy (darthvader2900):
Nope.
DivineSolar (divinesolar):
Step: Solve y=3x+15 for y:
Step: Substitute 3x+15 for y in 2x+3y=1
DivineSolar (divinesolar):
2x+3y=1 > 2x+3y=1(3x + 15)
DivineSolar (divinesolar):
2x+3y=1(3x + 15) = 1
DivineSolar (divinesolar):
Complete that and tell me what you get.
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OpenStudy (darthvader2900):
Never mind I think I know the answer.
DivineSolar (divinesolar):
What is your answer?
DivineSolar (divinesolar):
Well answers.
DivineSolar (divinesolar):
y = ? x = ?
OpenStudy (darthvader2900):
2x+y=8
x+3y=14
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DivineSolar (divinesolar):
No.
DivineSolar (divinesolar):
We are solving this system of equations > Yes?
OpenStudy (darthvader2900):
Yes
DivineSolar (divinesolar):
Then those are the wrong answers as it will be a one digit number for each variable, x = ?, y = ?
DivineSolar (divinesolar):
Lets go back to solving what I had before.
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DivineSolar (divinesolar):
11x+45=1
DivineSolar (divinesolar):
This is what you get.
OpenStudy (aajc10):
what are the ansers
DivineSolar (divinesolar):
Simplify both sides of the equation by adding -45 to each side > 11x + 45 + −45 = 1 + −45
DivineSolar (divinesolar):
What do you get?
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DivineSolar (divinesolar):
@DARTHVADER2900 You there?
OpenStudy (aajc10):
just_one_last_goodbye can you fan me please
OpenStudy (aajc10):
his computer froze
OpenStudy (darthvader2900):
I am not sure
DivineSolar (divinesolar):
Okay well it really is simple > 11x = -44 > Now we divide both sides by 11 > \[\frac{ 11x }{ 11 } = \frac{ -44 }{ 11 } (divide both sides by 11)\]
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DivineSolar (divinesolar):
What do you get for x?
DivineSolar (divinesolar):
@DARTHVADER2900
OpenStudy (darthvader2900):
Answer is 3, -4.
DivineSolar (divinesolar):
Correct, y = 3 and x = -4!
OpenStudy (darthvader2900):
Thanks!! I have no more questions.
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DivineSolar (divinesolar):
Great! :D!
DivineSolar (divinesolar):
Have a fantastic day~
OpenStudy (darthvader2900):
Have a good day, bye.
DivineSolar (divinesolar):
Be one with the force...Stay strong...Feel the power of the math side. ;P
OpenStudy (darthvader2900):
Haha^ Good one
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OpenStudy (darthvader2900):
@DivineSolar The force will be with you always.
DivineSolar (divinesolar):
@DARTHVADER2900 Thanks ;)