Finding the angles of a triangle: perimeter 43, AB = 5x-8,

[K‡rbyroth]

For ?ABC:

perimeter = 43
AB = 5x - 8
BC = 6x
AC = 12 + 2x

Determine the value of x

I tried 5x - 8 + 6x + 12 + 2x = 180
13x + 4 = 180
13x = 176
x = 13.538461...

Dont know what else to do to find x

 

[Deleted member 4993]

Re: Finding the angles of a triangle

For ?ABC:

perimeter = 43
AB = 5x - 8
BC = 6x
AC = 12 + 2x

Determine the value of x

I tried 5x - 8 + 6x + 12 + 2x = 180 <<< Why is that? Why is sum of three sides equal to 180? What is the definition of perimeter?
13x + 4 = 180
13x = 176
x = 13.538461...

Dont know what else to do to find x

 

[K‡rbyroth]

Re: Finding the angles of a triangle

hm oh i think i misread the problem i though it wanted to find the angles.