Question

I need help a$ap.......................

Answer 1

Answer: OPTION D

Explanation:

Based on the figure, we can say that:

`m\angle ABC+m\angle ABD=m\angle CBD`

Therefore, we can substitute values and solve for "x".

Then, we get that the value of "x" is:

`85\°+(1)/(2)x+30 =140\°\\\\115\°+(1)/(2)x=140\°\\\\(1)/(2)x=140\°-115\°\\\\x=2*25\\\\x=50`