Answer:40
Step-by-step explanation: so, in a quadrilateral, the sum of the angles is 360 degrees. in this case, we need to find the angle at the bottom. to do that, we subtract x+110 from 360, resulting in (step by step, 360-(x+110)= 360-x-110 = 250-x) 250-x. Since the sum of the angles of a quadrilateral is 360, the equation will be 2x+x+(250-x)+30=360.
we simplify: 2x+280=360
x=40
