Answer:
y=55
Step-by-step explanation:
First take note a triangle is always equal to a total of 180 degrees
now setup the equation.
y+40+y+30=180
rid of alike terms
70+2y=180
Now subtract 70 from both sides
2y=110
Now divide both sides by 2
Hey there!!
Remember :-
... The sum of all angles in a triangle is 180.
Hence,
... y + y + 30 + 40 = 180
... 2y + 70 = 180
... 2y = 110
... y = 110/2
... y = 55.
The value of y is 55.
Hope it helps!!
