Answer:
D
Step-by-step explanation:
if it isnt D its B but im pretty sure its D
X=18
Explanation:
The sum of the 3 angles in a triangle is 180∘
hence , the sum of the 3 angles given must equal 180
We can form an equation
2x + 3x + 5x = 180 ⇒10x=180⇒x=180/10
x=18
2(x) = 2(18)=36
3(18)=54
5(18)=90

The answer is rounded to the nearest tenth.