Answer:
4 feet
Step-by-step explanation:
We know the the area of a triangle can be represented as 
.
Since the height is twice the base, we can substitute the value 
in as 
in the expression, making it 
. If the area is 16, we can make the equation
Now to solve for b.
Hope this helped!
72*12 = 2*2*2*2*2*3*3*3 = 2^5*3^3
The constant of proportionality should be 45 miles per hour, and the car should travel 135 miles in three hours.
