SOLUTION: The sides of a triangle are x cm, (x-4) cm and (2x+5) cm long respectively. If its perimeter is 25cm, find the lenght of each side.
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Question 675785: The sides of a triangle are x cm, (x-4) cm and (2x+5) cm long respectively. If its perimeter is 25cm, find the lenght of each side. Answer by unlockmath(1688) (Show Source):
You can put this solution on YOUR website! Hello,
Let's add the sides:
x cm+(x-4)cm +(2x+5)cm=25cm
Add like terms:
4x+1=25
Subtract 1 and divide by 4:
x=6
Now we know the sides are:
6cm
2cm
17cm
Make sense?
RJ
www.math-unlock.com
