Friday

July 25, 2014

July 25, 2014

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

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 10:10pmhttp://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 10:17pmhahahaahah

thats k i figured it out

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

**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 ...

Trig - A bridge is built in the shape of a parabolic arch. The bridge has a span...

math - The longest steel arch bridge is the new river gorge near fayetteville,...

Algebra 2 - The arch of the Gateshead Millennium Bridge forms a parabola with ...

Math/Algebra - A bridge is built in the shape of a semi elliptical arch. It has ...

Algebra II - The shape of a supporting arch can be modeled by h(x)= -0.03^2+3x, ...

math - McDougal's Restaurant has a play area for children under and around their...