SOLUTION: a triangle has a perimeter of 23 m side B is twice as long as side A side C is 5 less than side A what is the length of side C i know that x+2x+x-5=23 combine the x's and you get 4

Question 1006580: a triangle has a perimeter of 23 m side B is twice as long as side A side C is 5 less than side A what is the length of side C i know that x+2x+x-5=23 combine the x's and you get 4x-5=23 add 5 to both sides and you get 28 divide that by 4 and you get 7 from their it says find the length of side C using x-5=___m
Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
a triangle has a perimeter of 23 m
side B is twice as long as side A
side C is 5 less than side A
--------
what is the length of side C ? i know that x+2x+x-5=23 combine the x's and you get 4x-5=23 add 5 to both sides and you get 28 divide that by 4 and you get 7 from their it says find the length of side C using x-5=___m
-----
Equations:
A + B + C = 23
B = 2A
C = A-5
---------------
A + 2A + A-5 = 23
4A = 28
A = 7
----
C = A-5 = 2
-----------------------
Cheers,
Stan H.
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