10 adults and 5 children can watch a movie for 75 dollars. but 8 adults and 10 children can watch the movie for 78 dollars. how
1 answer:
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Answer:
The truck travel must to have a constant speed of
Step-by-step explanation:
we have
where
d expresses a car's distance in feet
t is the number of seconds
<em>Find the distance d for t=8 sec</em>
<em>Find the distance d for t=8.2 sec</em>
The total distance in this interval of 0.2 sec is
<em>Find the speed of the car</em>
Divide the total distance by the time
therefore
The truck travel must to have a constant speed of