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algebra

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the formula d=(square root)12,800+h^2 gives the distance d in kilometers to the horizon from a satellite h kilometers above Earth.Find the distance to the horizon to the horizon from a satellite 4200 km above Earth. Round to the nearest kilometer. PLEASE HELP ME

  • algebra -

    what's the problem? you are given a formula and a value. Plug the value into the formula.

    d(h) = √(12800 + h^2)
    d(4200) = √(12800+4200^2)
    = √(12800+17640000)
    = √17652800
    = 4201

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