Answer:
x=40
Step-by-step explanation:
80°+(2x+20)°= 180°... (co-interior angles are supplementary)
2x=180 - 80 - 20
2x=80
(divide both sides by the coefficient of x which is 2)
x=80÷2
Check:
(2x+20) must be equal to 100
Let x=40
Therefore :
2X40+20
=100
x = 40
These angles are known as same-side interior angles. They are supplementary angles meaning they have a sum of 180°.
36
Substitute the A for the 9, since A=9, and multiply the numbers
is this answer answer correct
option (C)
Complementary angles are 90 degrees
Supplementary angles are 180
Hope this helps:))))
