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OpenStudy (abbie):
OpenStudy (abbie):
I got 4/16= x-3/2.5 and x=3.625 but how are they similar?
OpenStudy (danielbarriosr1):
13
OpenStudy (danielbarriosr1):
Because every side was multiplied by 4
OpenStudy (anonymous):
yeah I was gonna explain it but daniel is correct
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OpenStudy (abbie):
how did you get 13?
OpenStudy (danielbarriosr1):
so 2.5*4=10
OpenStudy (danielbarriosr1):
13-3=10
OpenStudy (abbie):
could you show me step by step?
OpenStudy (johnweldon1993):
You could do your ratio version too...
\[\large \frac{2}{8} = \frac{2.5}{x - 3} \]
Cross multiply
\[\large 2(x - 3) = 8\times 2.5\]
\[\large 2x - 6 = 20\]
\[\large 2x = 26\]
\[\large x = 13\]
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OpenStudy (danielbarriosr1):
I just did:
2.5*4=10
x-3=10
x=13
so
13-3=10
OpenStudy (danielbarriosr1):
Mine is easier and shorter.
OpenStudy (danielbarriosr1):
don't you think?
OpenStudy (johnweldon1993):
For this example where it is easy to see the multiple...yes, for a more complicated example, no @danielbarriosr1
OpenStudy (danielbarriosr1):
Yes that's true
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OpenStudy (danielbarriosr1):
You got me
OpenStudy (abbie):
how are they similar
OpenStudy (danielbarriosr1):
???
OpenStudy (johnweldon1993):
But @abbie
Where your ratio calculation went off...is you have
\[\large \frac{4}{16} = \frac{x - 3}{2.5}\]
If you want to calculate the ratio...you need to keep the sides the same...you chose the smaller side (4) then the bigger side (16) ..but when you went to the comparing ratio ...you chose the bigger polygon (x - 3) then the smaller one (2.5) you need to keep those in order to come u with the correct calculation
OpenStudy (johnweldon1993):
They are similar in the sense that the larger polygon is 4 times bigger than the smaller polygon
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OpenStudy (abbie):
no I mean how are the polygons similar?
OpenStudy (danielbarriosr1):
Yes, The larger one is 4 times bigger
OpenStudy (anonymous):
I swear I had this problem a while ago.
OpenStudy (abbie):
ok thnx yall
OpenStudy (danielbarriosr1):
No Problem
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OpenStudy (johnweldon1993):
Anytime!
OpenStudy (anonymous):
OpenStudy (anonymous):
OpenStudy (anonymous):
That's how I answered it.
OpenStudy (anonymous):
If you use what I did though, do it slightly different. Or else the teacher might realize.