Question

in the figure figure AOB is a straight line find the value of x find ANGLE AOC=(3x-5°) and angle COD=55° and angle DOB=x+20°

Answer 1

AOB is straight line
x = ?
angle AOC + angle COD + angle DOB = 180
(3x-5) + 55 + x + 20 = 180
3x+x+55+20-5 = 180
4x+75-5 = 180
4x+70 = 180
4x = 180- 70
4x = 110
x = 110/4
x = 27.5
hope it helps.

Answer 2

Answer:

AOB is straight line

x = ?

angle AOC + angle COD + angle DOB = 180

(3x-5) + 55 + x + 20 = 180

3x+x+55+20-5 = 180

4x+75-5 = 180

4x+70 = 180

4x = 180- 70

4x = 110

x = 110/4

x = 27.5

hope it helps.