The measures of the angles of a triangle can be represented by the expressions (2x), (3x-20), and (3x). What are the measures of the three angles?
a) 20, 30, 130
b) 36, 72, 72
c) 40, 60, 80
d) 50, 55, 75

Question

The measures of the angles of a triangle can be represented by the expressions (2x), (3x-20), and (3x). What are the measures of the three angles?
a) 20, 30, 130
b) 36, 72, 72
c) 40, 60, 80
d) 50, 55, 75

anonymous · Answer

can you attach a diagram of the triangle please?

anonymous · Answer

There is no image of the diagram :/ thats why i dont get it either.

anonymous · Answer

you can use the fact that the sum of the angles in any triangle is 180 degrees so you'd have the equation:
$\large  (2x)+(3x-20)+(3x)=180 $
solve for x then plug that value in back to the expressions for the angles of the triangle.

ghazi · Answer

sum of three angles in a triangle is 180 degrees

anonymous · Answer

thanks