SOLUTION: Two sides of an equilateral triangle have lengths 3x + 1 and x + 11. Which of 21 - x or 4x + 5 could be the length of the third side? a. 21 - x only b. neither 21 - x nor 4x

Algebra ->  Angles -> SOLUTION: Two sides of an equilateral triangle have lengths 3x + 1 and x + 11. Which of 21 - x or 4x + 5 could be the length of the third side? a. 21 - x only b. neither 21 - x nor 4x       Log On


   

Question 466087: Two sides of an equilateral triangle have lengths 3x + 1 and x + 11.
Which of 21 - x or 4x + 5 could be the length of the third side?
a. 21 - x only
b. neither 21 - x nor 4x + 5
c. 4x + 5 only
d. both 21 - x and 4x + 5
Answer by ewatrrr(24785) About Me  (Show Source):
You can put this solution on YOUR website!
 

Hi,

equilateral triangle

3x + 1 = x + 11

   x = 5  OR sides are 16



21-5 = 16

4*5 + 5 ≠ 16



a. 21 - x only