minor axis at (4,1). 2. Elliptical arches: In some situations, bridges are built using uniform elliptical archways as shown in the figure on the right. Find the standard equation of the ellipse forming each arch if it has a total width of 30 ft. and a maximum center height (above level ground) of 8 ft. What is the height of a point 9 ft. to the right of the center of each arch? 8 ft 60 ft

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A: Use the formula and evaluate.

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Q: How many elements does it contain?  I forgot to add that part.

A: From the above part we haven(C) = n(B) ={ (1,4),(4,1),(2,3),(3,2) }n(CB) = { (2,3),(3,2) }

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