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Mathematics 21 Online
OpenStudy (anonymous):

I really need help with this question

OpenStudy (anonymous):

OpenStudy (anonymous):

I think I use a^2 + b^2 = C^2 I just don't know what numbers to place where

OpenStudy (anonymous):

For the radius, you would do a^2 + b^2 = c^2 with CM & OM

OpenStudy (anonymous):

You know that CD is 44 so CM is half of that value.

OpenStudy (anonymous):

so i have to find c^2

OpenStudy (anonymous):

Yes

OpenStudy (anonymous):

c2 would be the radius

OpenStudy (anonymous):

Okay so I got sqrt 884 is that tight

OpenStudy (anonymous):

YES √884 is correct for the radius. For part b, it is again the pythagorean theorem. use the radius that you found & the value for ON, which is 19. this time you are not solving for c^2, since you already found that (the radius) you are solving for b^2.

OpenStudy (anonymous):

so it would be 19^2 + b^2 = sqrt884

OpenStudy (anonymous):

Yeah, now algebraically solve for b^2.

OpenStudy (anonymous):

okay this is were I get confused what do I do after 361 + b^2 = sqrt 884

OpenStudy (anonymous):

It is √(884)^2 btw!!! So that actually just = 884!!!

OpenStudy (anonymous):

oh thank you

OpenStudy (anonymous):

so the answer is sqrt523

OpenStudy (anonymous):

After you get 361 + b^2 = 884, you have to subtract 361 to get the variable (b^2) alone. The golden rule of algrebra is what you do to one side, you must do to the other so subtract 361 fro 884

OpenStudy (anonymous):

Yeah, sorry I didn't realize you already posted the final answer! That's right!

OpenStudy (anonymous):

thank now can you help me with the last one do I still use a^2 + b^2 = C^2

OpenStudy (anonymous):

No! Since you already know half of EF (√523) you just multiply by 2

OpenStudy (anonymous):

multiple 523 by two or the sqrt

OpenStudy (anonymous):

all of it. (√523) x 2 = 45.74

OpenStudy (anonymous):

Thank you so much for your help can you help with one more

OpenStudy (anonymous):

uh sure haha

OpenStudy (anonymous):

Here it is

OpenStudy (anonymous):

I can't figure out what Theorem to use here

OpenStudy (anonymous):

Oh I'm sorry! I don't really remember how to do those, that was so long ago in geometry lol, like I'm doing AP Calc now. You should post it as a new question & you'll get someone else to help! Sorry!

OpenStudy (anonymous):

thank you

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