It's an octagon.
The sum of the measures of the angles in the polygon with n sides:
S = 180°(n - 2)
n = 8
S = 180°(8 - 2) = 180° · 6 = 1080°
Answer: 1080°
Answer:
The first 4 are correct and the last one is incorrect
Step-by-step explanation:
1. The diameter of the circle is 30.8 m ( Correct )
Radius = 15.4 so diameter is 2 times the radius which is 30.8 m
2. The circumference in terms of π is 30.8 π ( Correct )
Circumference = π × Diameter
Circumference = π × 30.8
Circumference = 30.8 π
3 . The circumference of the circle can be found using 2 × π × 15 . 4 ( Correct )
Circumference = π × Diameter
Circumference = π × 30.8
Circumference = 30.8 π
4 . The approximate circumference of the circle rounded to the nearest tenth is 96.7 m ( Correct )
Circumference = 30.8 π = 96.7610537306
5 . A little more than 6 diameters could be wrapped around the circle
( False )
Circumference = 96.7610537306
Diameter = 30 . 8
96.7610537306 ÷ 30 . 8 = 3.14
Answer:
2x=128
x=64
Step-by-step explanation:
alternate interior angles are equal
2x=128
x=128÷2
x=64
Answer:
y = (2/9)(x + 1)² + 2
Step-by-step explanation:
y = a(x - (-1))² + 2
y = a(x + 1)² + 2
4 = a(2 + 1)² + 2
4 = 9a + 2
9a = 2
a = 2/9
y = (2/9)(x + 1)² + 2
