Answer:
12 sides
Step-by-step explanation:
(n-2)*180/n = 150
180n-360 = 150n
-360 = 150n-180n
-(-360) = -(-30n)
360 = 30n
n = 360/30
n = 12
Answer:
upper bound = 112.5
lower bound = 111.5
Step-by-step explanation:
x = 360 - 59 - 108 - 81
x = 112°
upper bound = 112.5 < 113
lower bound = 111.5 < 112
so
L.B. U.B.
111.5 < 112 < 112.5
We see that both equations have 4y in them. Subtracting the second equation from the first equation, we get (3x -2x) + (4y-4y) = 2 - 8, x = -6
Plugging x = -6 into any equation, we see that our answer is 18 + 4y = 2, 4y = 2 - 18 = -16, y = -4.
Our answer is x = -6, y = -4
Answer:12
Step-by-step explanation:
15^2-9^2=12^2
225-81=144
