Answer:
80
Step-by-step explanation:
i had a test with the same question, i promise its right :)
The return trip took 1 hour 42 minutes longer
Further explanation:
The distance will remain same on return.
The formula for speed is given by:

Let d be the distance
s1 be the speed while going and s2 be the speed while returning
and
t1 be the time while going and t2 be the time while returning
d=500 miles
s1=60 miles per hour
s2=50 miles per hour
We have to calculate time for both trips,
So,
<u>Time while Going:</u>
<u>
</u>
<u>Putting the values of d and s1</u>
<u>
</u>
<u>Converting 8.3</u>
8 will be the hours,
for 0.3 hour
0.3*60=18 minutes
The first trip took 8 hours and 18 minutes.
<u>Time while returning:</u>

Putting the values of d and s1

The difference of both times is: 1 hour 42 minutes
So,
The return trip took 1 hour 42 minutes longer
Keywords: Time, Distance, Speed
Learn more about movement at:
#LearnwithBrainly
The answer is number 3 only the first one is an identity most definite
Answer: no solution
Reason: the 9x on one side cancels out the other, and 3 is not equal to 7.
Answer:
y=1/4x+2.5
Step-by-step explanation:
Find rise/run
rise/run=1/4
Look for the point
(2,3)
Plug into y-y2=m(x-x2)
y-3=1/4(x-2)
Solve
y-3=1/4x-0.5
y=1/4x+2.5