brucebaner
  • brucebaner
help me with Similarity and Scale
Mathematics
schrodinger
  • schrodinger
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brucebaner
  • brucebaner
1 Attachment
brucebaner
  • brucebaner
help me @AriPotta
AriPotta
  • AriPotta
yay proportion time~ side MN corresponds to side TU side NO corresponds to side UV so...\[\frac{ MN }{ TU }=\frac{ NO }{ UV }\]

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brucebaner
  • brucebaner
okay
AriPotta
  • AriPotta
MN = 2.2 TU = x NO = 4.1 UV = 12.3 \[\frac{ 2.2 }{ x }=\frac{ 4.1 }{ 12.3 }\] cross-multiply and solve for x
brucebaner
  • brucebaner
66 or 6.6?
AriPotta
  • AriPotta
2.2(12.3) = 4.1x
brucebaner
  • brucebaner
so its 4.1?
AriPotta
  • AriPotta
no..
AriPotta
  • AriPotta
what's 2.2 time 12.3
AriPotta
  • AriPotta
times*
brucebaner
  • brucebaner
like that?
AriPotta
  • AriPotta
it's not 22, it's 2.2
brucebaner
  • brucebaner
lol thx
brucebaner
  • brucebaner
so the answer is 2.2?
AriPotta
  • AriPotta
no.
brucebaner
  • brucebaner
27.06?
AriPotta
  • AriPotta
|dw:1434318543856:dw|
AriPotta
  • AriPotta
so 2.2(12.3) = 4.1x is what we get after cross-multiplying. make sense?
brucebaner
  • brucebaner
so its 4.1?
brucebaner
  • brucebaner
im sorry im not good at this
AriPotta
  • AriPotta
no. that is an equation. we can use that equation to solve for x.
AriPotta
  • AriPotta
2.2(12.3) = 4.1x what is 2.2 times 12.3?
brucebaner
  • brucebaner
27.06
AriPotta
  • AriPotta
right. so 27.06 = 4.1x what should we do now to get x by itself?
brucebaner
  • brucebaner
okay
AriPotta
  • AriPotta
lol that was a question. what do we do next?
brucebaner
  • brucebaner
i dont know im new to this
AriPotta
  • AriPotta
what's the opposite of multiplication
brucebaner
  • brucebaner
divide
AriPotta
  • AriPotta
right. so we're going to divide both sides of the equation by 4.1 to get our answer.
brucebaner
  • brucebaner
i got 6.6
AriPotta
  • AriPotta
yes :) that is right.
brucebaner
  • brucebaner
can you help me with more?
AriPotta
  • AriPotta
i guess so. open a new question and tag me

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