Posted by **Gabby** on Thursday, April 12, 2012 at 3:02am.

In a factory, a parabolic mirror to be used in a searchlight was placed on the floor. It measured 40 centimeters tall and 90 centimeters wide. Find the equation of the parabola.

I tried working this problem out and I got y=-8/405x^2+40, but I'm not sure if it is right. Could someone please help me?

- Math -
**Steve**, Thursday, April 12, 2012 at 11:07am
draw a picture of the parabola, centered over (0,0)

vertex: (0,40)

x-intercepts: x = 45, -45

y = (45^2 - x^2) * 40/45^2

you can pretty it up if you want.

- Math -
**Allie**, Thursday, April 12, 2012 at 5:00pm
Is my answer correct then??

## Answer this Question

## Related Questions

- Math - A blueprint 8 centimeters wide and 14 centimeters high is to be enlarge....
- math - A cylindrical pop canis 12.5 centimeters tall and 5.5 centimeters wide. ...
- math - The top and bottom flaps in the box are each 4 centimeters by 2 ...
- algebra - A rectangular hole 2 centimeters wide and x centimeters long is cut in...
- Math - A rectangle sheet of aluminum foilis 50 centimeters long and 20 ...
- algebra - A parabolic microphone has a cross-section in the shape of a parabola...
- MATH; linear equation? - radius; another word for the bone that connects the ...
- Math, Please Help!!! - an engineer designs a satellite dish with a parabolic ...
- algebra - A rectangular sheet of aluminum foil is 50 centimeters long and 20 ...
- Algebra - A rectangular sheet of aluminum foil is 50 centimeters long and 20 ...

More Related Questions