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Audrae_World

  • 2 years ago

The Earth’s path around the Sun is elliptical, and the Sun is situated at one of the foci. If the Earth’s orbit can be represented by x^2/25 + y^2/16 = 1, where x and y are measured in 100 million miles, what is the distance from the center of Earth’s elliptical path to the sun? A.)100 million miles B.)200 million miles C.)300 million miles D.)400 million miles

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  1. dpaInc
    • 2 years ago
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    theyre looking for the distance from the center of the given ellipse to one of your foci... since c^2 = a^2 - b^2 where a=5, b=4 can you find c and answer the question?

  2. Audrae_World
    • 2 years ago
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    but that gave me 1,681

  3. dpaInc
    • 2 years ago
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    c^2 = a^2 - b^2 c^2 = 25 - 16 c^2 = 9 c = ???

  4. Audrae_World
    • 2 years ago
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    Ohh I added, that's where I went wrong, but c=81

  5. dpaInc
    • 2 years ago
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    no trye agen

  6. Audrae_World
    • 2 years ago
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    c = 3 3*100 million miles = 300 million miles?

  7. dpaInc
    • 2 years ago
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    yes... you got it... :)

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