Posted by **math pro** on Thursday, April 16, 2009 at 9:46pm.

test tomm so plz reply back fast

a concrete bridge over a river has an underside in the shape of a parabolic arch. At water level, the arch is 30 mwide. it has maximum heigt of 10m above the water. the minimum vertical thickness of the concrete is 1.5m.

1-find the algebraic relation that represents the shape of the arch?

2-what is the vertical thickness of the concrete 3m from the centre of the arch?

3-if the water level rises 2m, how wide will the arch be at this new level?

can u plz explain each answer in detail as soon as possible plz

- MATH -
**Reiny**, Thursday, April 16, 2009 at 10:10pm
http://www.jiskha.com/display.cgi?id=1239932633

I know how to do your question, but I don't feel like doing so.

After all, I can do as I please.

- MATH -
**math pro**, Thursday, April 16, 2009 at 10:17pm
hahahaahah

thats k i figured it out

- MATH -
**Ms. Sue**, Thursday, April 16, 2009 at 10:36pm
Reiny -- Point well taken!

## Answer This Question

## Related Questions

- algebra - You live near a bridge that goes over a river. The underside of the ...
- algebra - You live near a bridge that goes over a river. The underside of the ...
- Math - The underside of a bridge has a shape of a parabolic arch. It has a ...
- Math - A bridge over a river is supported by an arch. The function that ...
- Math - The rainbow bridge of Utah is a natural arch that is approximately ...
- Trig - A bridge is built in the shape of a parabolic arch. The bridge has a span...
- math - How do I draw this out I am confused? The bridge forms parabolic arch. ...
- math - How do I draw this out I am confused? The bridge forms parabolic arch. ...
- Pre-Calculus - The Gateway Arch in St. Louis, Missouri is not a parabola but a ...
- Algebra II - The shape of a supporting arch can be modeled by h(x)= -0.03^2+3x, ...

More Related Questions