Answer:
Sum of angles of a polygon with one side less = (12-2)x180 = 1800
Sum of angles of a polygon with one side more = (14-2)x180 = 2160
Step-by-step explanation:
(n-2)x180 = 1980
n = 13
Sum of angles of a polygon with one side less = (12-2)x180 = 1800
Sum of angles of a polygon with one side more = (14-2)x180 = 2160
Answer:
(x + 7)^2 = 64
Step-by-step explanation:
x^2 + 23x – 19 = 9x - 4
x^2 + 23x - 9x = -4 + 19
x^2 + 14x = 15 = 0
Completing the square:
(x + 14/2)^2 - (14/2)^2 = 15
(x + 7)^2 - 49 = 15
(x + 7)^2 = 64
Answer:
Step-by-step explanation:
Answer:
30 because you have two choices with the same probability
Step-by-step explanation: