Answer:
I'm g(=)0 hope you get the point now.
The average speed is 52.6 miles/hour.
Step-by-step explanation:
Given,
The distance (D) = 389.24 miles
Time (T) = 7.4 hours
To find the speed
Formula
Distance = Speed × Time
Now,
Speed = 
=
miles/ hour
= 52.6 miles/ hour
Hence, the average speed is 52.6 miles/hour.
I don’t know how to explain it so I am just giving the equation
12=-4(-6x-3x)
Divide both sides by 4
12/4=-4(-6x-3x)/4
3=-4(-6x-3x)/4
3=-(-6x-3x)
3=9x
9x/9 = 3/9
Divide both sides by 9
x=1/3
Divide total miles by total liters:
340 miles / 60 liters = 5 2/3 miles per liter
You divide 16 into 12 and get 1.3 repeating