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Mathematics 28 Online
OpenStudy (anonymous):

Find x, which is the same as length BA http://i.imgur.com/hIebtn4.png @jim_thompson5910

jimthompson5910 (jim_thompson5910):

Solve for x \[\Large \frac{CA}{CB} = \frac{DF}{DE}\] \[\Large \frac{8+x}{8} = \frac{10+25}{10}\]

OpenStudy (anonymous):

what is the next step after that?

OpenStudy (anonymous):

@jim_thompson5910 is there another step?

jimthompson5910 (jim_thompson5910):

yes there are many steps after that you need to fully isolate x (get it by itself)

jimthompson5910 (jim_thompson5910):

\[\Large \frac{CA}{CB} = \frac{DF}{DE}\] \[\Large \frac{8+x}{8} = \frac{10+25}{10}\] \[\Large \frac{8+x}{8} = \frac{35}{10}\] \[\Large 10(8+x) = 8*35\] \[\Large 80 + 10x = 280\] I'll let you finish up

OpenStudy (anonymous):

can you show me how?

jimthompson5910 (jim_thompson5910):

give it a shot and tell me what you get

OpenStudy (anonymous):

okay thank you

jimthompson5910 (jim_thompson5910):

have you solved linear equations before?

OpenStudy (anonymous):

x=20

jimthompson5910 (jim_thompson5910):

that is correct

OpenStudy (anonymous):

Thank you :)

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