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OpenStudy (anonymous):

On the sidelines of each of its televised football games, the FBTV network uses a parabolic reflector with a microphone at the reflector’s focus to capture the conversations among the players on the field. If the parabolic reflector is 3 feet across and 1 foot deep, where should the microphone be placed?

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OpenStudy (anonymous):

What does it means by "3 feet across and 1 foot deep."

OpenStudy (anonymous):

Would "3 feet across" mean the latus rectum?

OpenStudy (anonymous):

i think so

OpenStudy (anonymous):

Then what would the depth be?

OpenStudy (anonymous):

unless the three feet is the directrix and the depth is like its height

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OpenStudy (anonymous):

|dw:1338075860224:dw| can you find a by replacing x, y with the given points?

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