Answer:
1. d.9
2.
3.
Step-by-step explanation:
that is the only one I know sorry
The second. Hope that helps.
Answer:
The answer is 6x+7x_4-20
Step-by-step explanation:
Answer:
150°
Step-by-step explanation:
To find the sum of all the interior angles in a regular polygon, us this formula, where n is the number of sides: (n-2)*180
(12-2)=10
10*180=1800
Now we have the sum of all the angles. But we aren't done yet! We have to divide this value by the number of sides to find the measure of one angle.
So,
1800/12=
150
Hope this helps!
Answer: C.
Step-by-step explanation:
i hope this helpes!!