purplemonkey

09-20-2005, 03:54 PM

So, I am sure that this will be an easy question for ya'll tonight, I havent had a math class in a million years and I am trying to complete some much needed extra credit work, but I have gotten a little frustrated.

The question is.... A triangle has a perimeter of 161 miles, each of the two smaller sides of the triangle are two-thirds the lenght of the longest side. Find the lenght of each side.....

So, heres what I know....

I know that the perimeter is the lenght of all the sides togeather....

a + b + c = p

I can tell that two sides are the same lenght here so lets say a =b

and those are 2/3 of the side c....so should my equation look like

(c-1/3) + (c-1/3) + c =161 ??

and if that is right how in the world do i solve that? can i say 3c-2/3 =161? i am sure that isnt right....i am really going a bit crazy.... my math book doesnt have a geometry chapter really, so i am lost.

The question is.... A triangle has a perimeter of 161 miles, each of the two smaller sides of the triangle are two-thirds the lenght of the longest side. Find the lenght of each side.....

So, heres what I know....

I know that the perimeter is the lenght of all the sides togeather....

a + b + c = p

I can tell that two sides are the same lenght here so lets say a =b

and those are 2/3 of the side c....so should my equation look like

(c-1/3) + (c-1/3) + c =161 ??

and if that is right how in the world do i solve that? can i say 3c-2/3 =161? i am sure that isnt right....i am really going a bit crazy.... my math book doesnt have a geometry chapter really, so i am lost.