NL= 2x-2
x=7
2 (7)-2
14-2
NL=12
x=7 because the angle is 90°
so 9x+27=90
-27 both sides
9x=63
÷9 both sides
x=7
Answer:
-0.65, -3/8, 5/16, 2/4
Step-by-step explanation:
-3/8 = -.375
5/16 = .3125
2/4 = .50
Hi there! The answer is x = 20°
The angles are supplementary, which means that the sum of the angles is 180°.
The sum of the angles also equals
![3x + 40 + 80](https://tex.z-dn.net/?f=3x%20%2B%2040%20%2B%2080)
Therefore, we get the following equation.
![3x + 40 + 80 = 180](https://tex.z-dn.net/?f=3x%20%2B%2040%20%2B%2080%20%3D%20180)
Collect terms
![3x + 120 = 180](https://tex.z-dn.net/?f=3x%20%2B%20120%20%3D%20180)
Subtract 120
![3x = 60](https://tex.z-dn.net/?f=3x%20%3D%2060)
Divide by 3
To find the y-intercept, we set x=0 and solve for y.