Step-by-step explanation:
The sum of the interior angles of a convex regular polygon is 180 times (n-2), where n is the number of sides. Since we already know the sum, we can write 3,960 = 180(n-2). If you solve for n in this equation, you will have the number of sides.
5y=-10
Y=-2 it has one solution
Answer:x=1
Step-by-step explanation:
5/7 that’s that’s the answer
Answer:
B
Step-by-step explanation:
Preliminary
From A, drop a perpendicular to the line BC.
The line BC has to be extended to your right.
Call the intersection point D.
Find angle ABD
ABD and ABC = 180 They are supplementary angles.
140 + ABD = 180
ABD = 40
Find AD
Sin(theta) = AD/AB
AB = 25
Theta = 40
Sin(theta) = AD / 25
Sin(40) = 0.6428
0.6428 = AD / 25 Multiply both sides by 25
AD = 25*0.6428
AD = 16.07
Find the Area of ABC.
The height = 16.07
The base = 40 m
Area = 40*16.07 / 2
Area = 321.4 m^2
