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anonymous
 one year ago
If the telescope is 1 m deep and 8 m wide, how far is the focus from the vertex?
anonymous
 one year ago
If the telescope is 1 m deep and 8 m wide, how far is the focus from the vertex?

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welshfella
 one year ago
Best ResponseYou've already chosen the best response.1the telescope is a parabola use the standard form x^2 = 4ay where (0.a) is the focus here x^2 = 8x so what is the value of a?

welshfella
 one year ago
Best ResponseYou've already chosen the best response.1x^2 = 4ay x^2 = 8y therfore 4a = 8 and a = 2 the focus is 2 m from the vertex

welshfella
 one year ago
Best ResponseYou've already chosen the best response.1do you follow that?
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