Answer:
It will take 1 hour and 12 minutes for the two trains to be 192 miles apart
Step-by-step explanation:
The total distance between the two trains is the distance traveled by both trains. The distance traveled by the eastbound train is 85 mph * elapsed time and the distance traveled by the westbound train is 75 * elapsed time.
The combined formula is distance traveled = speed of first train * elapsed time + speed of second train * elapsed time.
Since the elapsed time is equal for both trains then the formula is modified as distance traveled = (speed of first train + speed of second train) * elapsed time.
Solving for the elapsed time
distance traveled = (speed of first train + speed of second train) * elapsed time
192 miles = (85mph + 75 mph) * elapsed time
192 miles = 160 mph * elapsed time
elapsed time = 192 miles / 160 mph
elapsed time = 1.2 hours
elapsed time = 1 hour and 12 minutes
It will take 1 hour and 12 minutes for the two trains to be 192 miles apart.
Answer:the answer is 28 the second one.
Step-by-step explanation:
Answer:
k=38
Step-by-step explanation:
38+10=48
Answer:
x = -2 and y = -5
Step-by-step explanation:
5x - y = -5
5x + 5 = y
Now , Substituting value of y in 3x-6y = 24
3x - 6(5x + 5) =24
3x - 30x -30 = 24
-27 x - 30 = 24
-30 - 24 = 27x
-54 =27x
x = -54/27
x = -2
Substituting value of x in 5x-y=-5
5 (-2) - y = -5
-10 -y =-5
-10 +5 =y
y = -5
The answer would be 10.51