Answer:
b=20
C=160
Step-by-step explanation:
160+b= 180 (sum of angle on the straight line)
b=180-160
b+c =180 (sum of angle on the straight line)
20+c=180
c=180-20
-6,-2
70 degrees.
Add up all the values and divide by 5.
350/5 = 70.
i√19
Because √(-19) = √(-1)√19, and because √(-1) = i, we get i√19
