Respuesta :
number of hours = h
the bus left 2 hours before the car so the car traveled h-2 hours
The car travels at 70 mph.
so the equation for the car is: 70(h-2)
Answer:
Car and bus will be 800 miles apart after 7.83 hours.
Expression that represents the distance cover by car will be 70(h - 2) miles
Step-by-step explanation:
Bus travels at a constant speed of 50 mph and the car travels with a speed = 70 mph in the opposite directions.
If the bus travels for h hours then the distance traveled by the bus will be
Distance = Speed × Time
= 50h
Now we know car starts traveling after 2 hours so total time to travel will be (h - 2) hours.
Therefore, Distance = Speed × Time
Distance covered by car = 70(h - 2) miles
Since they are traveling in the opposite directions so total distance covered will be = Distance covered by bus + Distance covered by car
800 = 50h + 70(h - 2)
800 = 50h + 70h - 140
120h = 800 + 140
120h = 940
h = [tex]\frac{940}{120}[/tex]
h = 7.83 miles
Therefore, Car and bus will be 800 miles apart after 7.83 hours.