Asked by A

The arch support of a bridge can be modeled by y=-0.0012x^2 where x and y are measured in feet. Find the height and width of the arch.

I don't know how to even attempt to solve this... If you know how, can you PLEASE help asap!!

Answers

Answered by oobleck
This cannot be right, as the vertex is at (0,0)
You need an equation of the form
y = a - bx^2
where the height of the arch is at a, and the width is 2√(a/b)
Answered by asdfasdf
height: 300 feet
width: 1000 feet
Answered by chinese guy
WIDTH: 342941 :HEIGHT: 243143
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