A polygon is any figure sided with three sides and above such that triangle (3) is the smallest polygon. A nonagon is a polygon with 9 sides. To get the sum of interior angles of a polygon we use the formula;
(n-2) 180 or (n-4)90 where n is the number of sides.
Therefore, for a nonagon the sum of interior angles = (9-2) 180 = 1260 degrees
If we add all the angles we should get 1260, considering the remaining angles to be each x
Thus 138+154 +145 +132 +128 +147 +130 + x +x =1260
= 974 + 2x = 1260
= 2x = 286
= 143
therefore, each of the other angles was 143
Answer:
true
Step-by-step explanation:
Answer:
No solutions
Step-by-step explanation:
- 3|–3x + 9| = –18
- |-3x + 9| = -6
- |-x + 3| = -2
1. - x +3 > 0 ⇒ x < 3
Not an answer as x must be smaller than 3
2. - x +3 < 0 ⇒ x > 3
- - (-x + 3) = -2
- x - 3 = - 2
- x = 3 - 2
- x = 1
Not an answer as x must be greater than 3
There are no solutions to the given equation
N is equal to negative 4
3 times 2 IS 6
Take 6 times 16n then take 6 times 3
Now you have 96n plus 18 equals 24n
Subtract 96n from both sides
18 equals negative 72n
Divide both sides by 18 you get 4 now u can't have a negative n so divide each by a negative so now u have n equals -4
