They are all perfect squares
(9x+2)(9x+20
(9x+2)^2
Do 72 divided by 7 to get your answer
Answer:
Step-by-step explanation:
Supplementary angles are angles equal to 180°.
Therefore:
Now that we have our equation, let's distribute the 
and the 
into the parentheses they are next to:
Combine like terms:
Subtract 
from both sides of the equation:
Divide by the coefficient of 
, which is 
:
~
Check your work by substituting 
into one of the equations above:
It's correct!
Answer:
x = 6
Step-by-step explanation:
13x + 2 = 12x + 8
Because of:
1) Corresponding angles
2) Vertically opposite angles
13x + 2 = 12x + 8
13x - 12x = 8 - 2
x = 6
Answer:
10°
Step-by-step explanation:
20°
6·20° =120°
120°/12 = 10°
