Respuesta :

nwjohnson1980

Answer:

x = 22

Step-by-step explanation:

line AD is 180°

so 40° + (5x + 30°) = 180°

solve for x.

5x = 180-30-40

5x= 110

x = 110/5

x= 22

txcvr

Answer: 22

180 - 40 = 140

5(22) = 110

110 + 30 = 140