Answer:
B
Step-by-step explanation:
In an isosceles trapezoid any lower base angle is supplementary to any upper base angle, thus
6x + 2x + 4 = 180, that is
8x + 4 = 180 ( subtract 4 from both sides )
8x = 176 ( divide both sides by 8 )
x = 22 → B
420 miles
-3(2x-6)+4=-6x+18+4=-6x+22
16 m
c=f×m
331=20m ( divide by 20 both side)
therefore m=16.55m
