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Hello cooljackiec,
I've noticed that you have been posting many AoPS problems along with their official diagrams.
Please remove them as they constitute plagiarism and cause a permanent record that students who are attempting to solve the problems will see.
Thank you.
Yup!
***This topic is now resolved.***
Can someone help me prove that
? Thanks.deleted
I have solved this. Thank you for the help.
***This topic is now resolved***
Ahhhh, yes. I didn't think of that. However, I'm not sure what the values should be. How do we transfer
into ?Yup! Thanks! I will be using it from now on!
How would we factor
?Can someone explain how to get the answer for Q4? Thanks.
^^ Why does it just say Submit with a img symbol? ^^
Wait, where did you post the LaTeX help? <-----
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I got the Geogebra thing. I've used Geogebra before, but not the spreadsheet. I've learned it now. Thanks.
The circles
and intersect in two points A and B. Find the slope of .I got
, but I don't know what do do next! (\pm is plus or minus, and it's from the quadratic equation). I got that answer by expanding the second equation and using the first equation to find what x^2 and x are in terms of y. Then, I substituted them in and solved. I don't know what to do next now.Can someone help me solve this? Thanks.
Let
. Find the constant such that for all real numbers .Can someone help me solve this? I would like some help in how to solve it and what direction I should start. Thanks.
Can someone help with part b? Thanks.
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Can you explain how you got it? Thanks.
Wait, I got 20pi... It's wrong! I got 1/4\pi as the volume of the top and 81/4\pi as the volume of the whole thing.
How did you get the base as 20-2x?
What did you guys get for Q3?
Oh, so the cross-section is vertical? And that tiny triangle is the top part of the cone?____________________________________________________________________________________________________________________________________
How did you get the base as 20-2x?
____________________________________________________________________________________________________________________________________How do you know that JD=x?
@bobbundy
I posted something there. Can you help me there? Thanks.
I used a simpler algebra way to find x. Because you could use Pythagorean Theorem and write the base as 16+2x. Then since we also have the base as 20-2x. Setting them equal to each other we get x=1. Then use the ratios y/(y+10)=x(10-x) to find y.
I don't know which base you guys are talking about. Also, is x the radius of the inscribed circle?
Can you help me with Q3?
Can you guys help me prove that PR is a straight line? Thanks.
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