Answer:
-3/20
Step-by-step explanation:
12 * x + 3 = -8x
Make sure to use PEMDAS.
12x + 3 = -8x
Add 8x to both sides of the equation.
20x + 3 = 0
Subtract 3 to get 20x alone.
20x = -3
Divide both sides by 20.
x = 
Mixed Number Form: 6 11/45
Exact Form: 281/45
C 4
from one vertex there are 4 triangles that can form
58.3ft
Use the pythagorean theorem to find the answer.
Gotta subtract the triangle from the semi circle
Triangle: 1/2 base • height
= 1/2 (6) • 3
= 9
Then find the semi circle
(pi r^2)/2
= (3.14 • 3^2)/2
= 14.13
14.13 - 9 = 5.13 mm^2