Answer: he was on the train for 22 hours.
Step-by-step explanation:
Let t represent the time that Manuel spent on the train to Mexico.
Manuel traveled 31 hours nonstop to Mexico. This means that the time he spent on the bus is (31 - t) hours
Distance = speed × time
He took a train part of the way, which averaged 80 mph. This means that the distance he traveled on the train is 80t
Then, he took a bus the remaining distance, which averaged 60 mph. This means that the distance he traveled on the train is 60(31 - t)
Since the total distance covered is 2300 miles, it means that
80t + 60(31 - t) = 2300
80t + 1860 - 60t = 2300
80t - 60t = 2300 - 1860
20t = 440
t = 440/20
t = 22
Answer:
X=8/7
Step-by-step explanation:
7x +2=10
7x=10-2
7x=8. Divide both side by 7
x=8/7
Answer:
b i think
Step-by-step explanation:
Answer:
7.8
Step-by-step explanation:
You know that Akiko is 45 miles from the origin...Kosuke is (135/4) miles from the origin... You can draw a figure to clearly see the situation.
<span>you "know" that the angle between their routes is 140º </span>
<span>the side opposite (140º) is the distance between them... </span>
<span>c^2 = (45)^2 + (135/4)^2 - 2(45)(135/4) cos 140 </span>
<span>c ≈ 74.1 mile
Hope this answers the question.</span>
