Question

17. The angles of the triangel
are 3x-40, x+20 and 2x-10
then the value of x is​

Answer 1

Answer:

(3x-40)+(x+20)+(2x-10)= 180°(sum of angle)

6x-30=180°

6x=180+30

6x=210

6= 210/6

x= 35

3x-40= 3×35-40= 105-40=65°

x+20= 35+20= 55°

2x-10= 2×35-10=60°