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Mathematics 15 Online
rosalina134:

Hi guys!! Can someone please show me how to do this? I'm not really sure how to and its got me stumped... https://wca.sooschools.com/media/g_geo_ccss_2016/8/1007l20.html

ThisGirlPretty:

@dude Can you help? >.<

ThisGirlPretty:

@Vocaloid Whenever you get the chance >.<

Ultrilliam:

@Vocaloid @dude

Ultrilliam:

@Zepdrix @dude

Ultrilliam:

@Professional

Professional:

Okay do u want the answer or want me to show u different ting

Professional:

https://www.youtube.com/watch?v=PuHw0tUPPPY this helpful vid

rosalina134:

@professional Can you give me the answers, but along with instructions, so if I ever have to do it again I will be able to understand a little better?

rosalina134:

When you're online next, please help me finish if you don't mind... I watched the video and understood a little, but I still don't wanna get it wrong.

rosalina134:

Also if you don't mind... I had this and my teacher reassigned it because I didn't make above an 80.. Could you by chance help me find what it was I did wrong and help fix it?

ThisGirlPretty:

Vocaloid can :P, but shes busy right now v.v she'll be on your post as soon as possible ^-^ She can walk you through it! :D

rosalina134:

I hope someone can, I've been needing help most of the day.. I wish I could figure it out myself, but math isn't my strong suit as you can see above lol.

ThisGirlPretty:

Same haha and don't worry! Vocaloid is very good with explaining things :P

Ultrilliam:

Vocaloid is a excellent math helper and should be able to help once shes free

rosalina134:

Thanks guys! Do you think she'll help even if I log off for a bit, where I live its almost dinner time <_<

Ultrilliam:

Most likely :P

rosalina134:

Okay I think I figured out the geometric mean.. now I just need help with finding what I did wrong in the proportional

Angle:

For the proportions, we should use the Triangle Proportionality Theorem https://www.shmoop.com/similar-triangles/triangle-proportionality-theorem.html |dw:1512615925338:dw|

Angle:

|dw:1512616590676:dw|

Angle:

similar reasoning for the r, s, t problem if you still need help... I guess tell someone like ultriliam to message me, because I'll most likely be offline good luck

Angle:

@rosalina134

Angle:

there is also a video you can watch https://www.youtube.com/watch?v=594nKGdAIXg

rosalina134:

So would RST look like this??|dw:1512657506800:dw|

rosalina134:

@angle @ultriliam

rosalina134:

Also could u just go ahead and show me the geometric mean, when you get online, so that I can make sure my answers were correct?

Angle:

@rosalina134 yeah, that is what RST looks like, but be sure to include the angles you used to construct it; it seems your teacher wants to see that |dw:1512665884182:dw|

rosalina134:

Thank you! Could you also go over that geometric mean? I just wanna make sure I don't get it wrong @Angle

Angle:

|dw:1512666096195:dw|

rosalina134:

Could I show u how I had my first one drawn up and you tell me if its correct? Its a little different from that, but not by much..

Angle:

sure

rosalina134:

|dw:1512666304388:dw|

rosalina134:

this is for the first one in the construction.

Angle:

yup that looks right ^_^ the circle should go from the start of a to the end of b but it's hard to draw with a mouse so I get it |dw:1512666465496:dw|

rosalina134:

Yes lol! Can I show you the other two, how I have them? just to be sure they're correct?

Angle:

https://prnt.sc/hkf9ko

rosalina134:

Do I need to add ABC on this one as well or PQ?

Angle:

not really, unless your teachers ask for it

rosalina134:

Alright...:)

Angle:

x/2 = sqrt(rs) x^2 / 4 = rs x^2 = 4rs x/s = 4r/x |dw:1512667468005:dw|

rosalina134:

Wow okay, that looks a lot more complex lol! I really do appreciate your help though... :)

Angle:

the line is 4r + s long I'm going to class now good luck

rosalina134:

Thank you so much! :)

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