Write two equivalent expressions that represents the situation. What is the difference in their Elevations? And airplane flies an altitude of 25,000 feet. A submarine a diverse to a depth of 600 feet below sea level.

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Answer:
Answer:Hₐ (airplane) =  H₀ +25,000Hₐ (submarine) =  H₀ -600Difference in elevation = 25,600 ftStep-by-step explanation:Let the reference point  be Sea levelLet the Height at sea level = H₀Let the height above or below sea level = H₁Total Height  with respect to sea level = HₐHₐ =H₀ ±  H₁--------------------------------------------------------------------- (1)Where:  (+) is used for height above sea level(-) is used for height below sea level     For the airplane :Hₐ (airplane) =H₀ + H₁     = H₀ + 25,000----------------------------------------------------- (2)For the Submarine;Hₐ (submarine)  =H₀ - H₁     =H₀ -600Summarily:Hₐ (airplane) =  H₀ +25,000Hₐ (submarine) =  H₀ -600H₀ is common in both expressions for the respective heights. The difference  in elevation is given by :Hₐ (airplane) -Hₐ (submarine) =   (H₀ +25,000 ) -(H₀ -600)                                                 = 25,600 ft
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