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Mathematics 17 Online
OpenStudy (anonymous):

Triangle question...right triangle

OpenStudy (anonymous):

OpenStudy (anonymous):

this is what i have so far 13^2+x^2=(5+x)^2 169+x^2=25+10x+x^2 -x^2

OpenStudy (anonymous):

169=10x+25 -25 -25 143=10x /10 /10 x=14.3

hartnn (hartnn):

ok, i'll give u a short cut AC*CD =BC^2 5*CD = 12^2

hartnn (hartnn):

and CD is not equal to BD, john, so 13^2+x^2=(5+x)^2 is incorrect

hartnn (hartnn):

so, CD is just 144/5

OpenStudy (anonymous):

okay so i fell asleep while you guys did this @hartnn with all that work the answer would be 28.8 right?

hartnn (hartnn):

yup.

OpenStudy (anonymous):

alrighty thank you :)

hartnn (hartnn):

welcome ^_^

OpenStudy (anonymous):

^__^

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