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anonymous
 5 years ago
If a particular radio telescope is 100ft in diameter and has a cross section modeled by the equation x^2=167y, how deep is the parabolic dish? What is the location of the focus? can someone help me with this?
anonymous
 5 years ago
If a particular radio telescope is 100ft in diameter and has a cross section modeled by the equation x^2=167y, how deep is the parabolic dish? What is the location of the focus? can someone help me with this?

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amistre64
 5 years ago
Best ResponseYou've already chosen the best response.0learned a bit more about this stuff today i did....

amistre64
 5 years ago
Best ResponseYou've already chosen the best response.0x^2 = 4ay where a is the distance from the vertex..... and your vertex is at 0,0

amistre64
 5 years ago
Best ResponseYou've already chosen the best response.0167/4 is a so the focus is at..... 0+ 167/4

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0right. i have that its the first part that im having trouble with

amistre64
 5 years ago
Best ResponseYou've already chosen the best response.0ok.....we know that it 100 feet across, so that is 50 feet in both directions, when y = 50, what is x^2 = ?

amistre64
 5 years ago
Best ResponseYou've already chosen the best response.0is it headed in the x direction or the y?

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0the parabola opens up

amistre64
 5 years ago
Best ResponseYou've already chosen the best response.0then I would turn it into the normal way of viewing this: y =(1/167)x^2. when x = 50, whats y=?

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0so thats how deep it is?

amistre64
 5 years ago
Best ResponseYou've already chosen the best response.0the numbers are the same, we just repositioned them into the "normal" way that this equation would look.

amistre64
 5 years ago
Best ResponseYou've already chosen the best response.0the vertex is at (0,0) thats half way, half of the diameter is 50...plug it in :)

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0k I'll try that. thanks!

amistre64
 5 years ago
Best ResponseYou've already chosen the best response.0have you ever worked with quadratic equations?

amistre64
 5 years ago
Best ResponseYou've already chosen the best response.0cause thats all a parabola is...

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0yes. im in pre calc at a jr college, this stuff is being thrown at me quick but im doing my best.

amistre64
 5 years ago
Best ResponseYou've already chosen the best response.0phcc sound familiar to you?

amistre64
 5 years ago
Best ResponseYou've already chosen the best response.0its the community college I go to right now :) just wondering if you were in my trig/pre calc class ....

amistre64
 5 years ago
Best ResponseYou've already chosen the best response.0well, good luck to ya :)
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