The return trip was 21.2 hours long.
Step-by-step explanation:
Given,
Speed of plane from US = 212 mph
Speed of plane on return trip = 232 mph
Let,
x be the time taken on return trip.
Time taken from US = x+2
We know that;
Distance = Speed * Time
Distance of plane from US = 212(x+2) = 212x+424
Distance on return trip = 232x
As the distance will be same, therefore,

Dividing both sides by 20

The return trip was 21.2 hours long.
Keywords: distance, speed
Learn more about speed at:
#LearnwithBrainly
It would be C because a coefficient is always with a variable and 6 is with a variable which makes it a coefficient
Hope this helps
Have a great day/night
Answer:
See attachment
Step-by-step explanation:
On attachment
For a right triangle. if the legs are length a and b and hypotonse is c then
a²+b²=c²
given
a lig is 12
hypotonse is 37
a=12
c=37
12²+b²=37²
144+b²=1369
minus 144 both sides
b^2=1225
sqrt both sides
b=35
the other leg is 35 mm
X/2-20=22
440 is your answer