Vinnie is searching online for airline tickets. Two weeks ago, the cost to fly from Denver to Hartford
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The formula of t in terms of s , ,
is
The value of t when s = 310 , = 75 ,
= 80 is 2 hours
Step-by-step explanation:
Two trains left the cities A and B at the same time and headed towards
each other
- The cities are s miles apart
- The first train was traveling at the speed of
mph
- The second train was traveling at the speed of
- After t hours the two trains met each other
∵ The cities are s miles apart
∵ After t hours the two trains met each other
∴ s = +
, where
is the
distance that the 1st train moved in t hours and
is the distance that the 2nd train moved in t hours
∵ s = v t
∴ =
t
∴ =
t
- Substitute them in the equation of s
∴ s = t +
t
- Take t as a common factor in the right hand side
∴ s = t ( +
)
- Divide both sides by ( +
)
∴
The formula of t in terms of s , ,
is
∵ s = 310 m/h
∵ = 75 m/h
∵ = 80 m/h
- Substitute these values in the formula of t above
∴
∴ t = 2 hours
The value of t when s = 310 , = 75 ,
= 80 is 2 hours
Learn more:
You can learn more about distance, speed and time in brainly.com/question/1748290
#LearnwithBrainly
Answer:
55.38 min
Step-by-step explanation:
A car travels,
182 km ⇒ 4 hours
And we have to find the time that it takes to travel 42 km .
Lets make a equation.
Let the unknown time be x
182 km ⇒ 4 hours
42 km ⇒ x
To make easy let's km in to meters and hours in to minutes
182000 m ⇒ 240 min
42000m ⇒ x
Now use cross multiplication.
Hope this helps you.
Let me know if you have any other questions :-)