A triangle has one side that measures 4, another side that measures x, and a third side that measures 2 more than x. The perimeter is 12.

Which equation would we use to find the value of x?

x+x= 12
x+x+ 4 = 12
x+x+ 2 = 12
x+x+ 2 + 4 = 12

Question

A triangle has one side that measures 4, another side that measures x, and a third side that measures 2 more than x. The perimeter is 12.

Which equation would we use to find the value of x?

x+x= 12
x+x+ 4 = 12
x+x+ 2 = 12
x+x+ 2 + 4 = 12

anonymous · Answer

perimeter of triangle=  side +side+side
simply add all three sides (third side is x+2) and solve a bit you will see

anonymous · Answer

is it c

ganpat · Answer

no, perimeter = sum of all sides...

in given triangle 
1side = 4
2nd side = x 
3rd side = x + 2

so their sum = 4 + x + x + 2

So option 4...  x + x+ 2 + 4 = 12