Hello,
(5x-2)+(2x+6)=67
==>7x+4=67
==>7x=67-4
==>7x=63
==>x=63/7
==>x=9
|AB|=5x-2=5*9-2=45-2=43 (miles)
Answer:

Step-by-step explanation:

Answer:
b = -80
Step-by-step explanation:
-16 = 0.2b
Divide both sides by 0.2
We have , -16/0.2 = 0.2b/0.2
Therefore, b = -80
Supplementary angles have a sum of 180 degrees.
If one angle is x, its supplementary angle is 180-x.
We are told that x is 8 less than triple its supplements so:
x=3(180-x)-8
x=540-3x-8
4x=532
x=133