MEDAL:
What is the length of side A B? (attached)
A. 10 feet
B. 11 feet
C. 12 feet
D. 13 feet
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OpenStudy (helpblahblahblah):
OpenStudy (helpblahblahblah):
i think 12 feet
OpenStudy (cggurumanjunath):
10
OpenStudy (helpblahblahblah):
can u plz explain?
OpenStudy (anonymous):
yeah its 10
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OpenStudy (anonymous):
I'll explain how
OpenStudy (helpblahblahblah):
kk
OpenStudy (cggurumanjunath):
2/3
OpenStudy (cggurumanjunath):
ratios !
OpenStudy (cggurumanjunath):
6/9 =8/12 =2/3
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OpenStudy (cggurumanjunath):
x/15=2/3
OpenStudy (cggurumanjunath):
is it clear ? solve for x using above equation ! @HelpBlahBlahBlah
OpenStudy (helpblahblahblah):
no i dont really get that
OpenStudy (anonymous):
similarity
\[JK/AC = LK/CB =JK/AB\]
OpenStudy (anonymous):
is this clear so far ?
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OpenStudy (helpblahblahblah):
yeah
OpenStudy (anonymous):
look at the triangles please
OpenStudy (helpblahblahblah):
okay
OpenStudy (anonymous):
ok then substitute , you have the number in the drawing so you will have
\[\frac{ 9 }{ 6 } = \frac{ 12 }{ 8 }= \frac{ 15 }{ AB }\]
OpenStudy (anonymous):
is this clear till now ?
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OpenStudy (helpblahblahblah):
yes
OpenStudy (anonymous):
now you can use one of those two fraction to get the AB
so you can do this \[\frac{ 9 }{ 6 } = \frac{ 15 }{ AB }\]
use the cross multiplication method . AB= \[\frac{ 6 \times 15 }{ 9}\] = 10
OR
AB=\[\frac{ 8\times 15 }{ 12 }\]
= 10
OpenStudy (anonymous):
please let me know if you understand this now @HelpBlahBlahBlah :)
OpenStudy (helpblahblahblah):
ohhhh okay that makes since thanks soooo mcuh :)
OpenStudy (anonymous):
you're more than welcome , good luck :)
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