Wednesday

March 4, 2015

March 4, 2015

Posted by **jennifer** on Sunday, September 21, 2008 at 1:54pm.

The inclined ramp of a boat launch is 8 meters longer than the rise of the ramp.

The run is 7 meters longer than the rise. How long are the three sides of the ramp?

please explain how to do this one

- MATH -
**Reiny**, Sunday, September 21, 2008 at 3:26pmthe the rise be x m

then the run is x+7 m , and the ramp (the hypotenuse) is x+8 m

then

x^2 + (x+7)^2 = (x+8)^2

expand and simplify to

x^2 - 2x - 15=0

Can you take it from there?

(it factors)

- MATH -
**jennifer**, Sunday, September 21, 2008 at 4:07pmis this right

x^2 -2x-15=0

x^2-1x-1x-15=0

-1x(-1x+1) -1(-1x+1)

is this right?

- MATH -
**Reiny**, Sunday, September 21, 2008 at 8:25pmno

x^2 - 2x - 15=0

(x-5)(x+3)=0

x = 5 or x =-3

clearly x has to be positive

so the height of the ramp is 5, take it from there.

- MATH -
**jennifer**, Sunday, September 21, 2008 at 9:48pmok

so if the height is 5 then other side would be

13m and 12m?

**Answer this Question**

**Related Questions**

MATH - boating The inclined ramp of a boat launch is 8 meters longer than the ...

Math - The inclined ramp of the boat launch is 18 meters longer than the rise of...

physical science - A mover uses a ramp to push a stereo into the moving van. ...

physics - how much should a ramp rise over 10 meters of run for an angle of 12 ...

Physics - 2. A person would like to jump over a river using a motorcycle and a ...

Physical science - A ramp is 2.8 meters long and 1.2 meters high. How much ...

physics - A 5.40 Kg package slides 1.47 meters down a long ramp that is inclined...

physics - A 2.25 kg ball experiences a net force of 965 N up a ramp. Once the ...

math - crystal wants to build a ramp that will rise 4ft over a horizontal ...

Physics - In a water park, people walk a distance of 20 meters up an inclined ...