Dale drove to the mountains last weekend. there was heavy traffic on the way there, and the trip took 7 hours. when dale drove home, there was no traffic and the trip only took 5 hours. if his average rate was 18 miles per hour faster on the trip home, how far away does dale live from the mountains? do not do any rounding.
Answer:
Dale live 315 miles from the mountains
Step-by-step explanation:
Let y be the speed of Dale to the mountains
Time taken by Dale to the mountains=7 hrs
Therefore distance covered by dale to the mountain = speed × time = 7y ......eqn 1
Time taken by Dale back home = 5hours
Since it speed increased by 18 miles per hour back home it speed = y+18
So distance traveled home =speed × time = (y+18)5 ...... eqn 2
Since distance cover is same in both the eqn 1 and eqn 2.
Eqn 1 = eqn 2
7y = (y+18)5
7y = 5y + 90
7y - 5y = 90 (collection like terms)
2y = 90
Y = 45
Substitute for y in eqn 1 to get distance away from mountain
= 7y eqn 1
= 7×45
= 315 miles.
∴ Dale leave 315 miles from the mountains
The correct answer is option C which is 15 meters.
<h3>What is unit conversion?</h3>
Unit conversion is a multi-step process that entails multiplying or dividing by a numerical factor, selecting the correct number of significant digits, and then multiplying or dividing by another numerical factor.
The unit conversion will be done as:-
1 km = 1000 meters
0.0150 Km = 0.0150 x 1000 meters
0.0150 Km = 15 meters
Therefore the correct answer is option C which is 15 meters.
To know more about unit conversion follow
brainly.com/question/141163
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Answer:
I wouldnt know.
Step-by-step explanation:
i think you forgot to attach the image, I’ll come back when you do. Just make sure to do that next time
Answer:
slope is 1/3
Step-by-step explanation:
In between the points, you go up one, and forward 3. it can't be a negative slope cause it aint going down. And the slope of 3 is steep last time I checked.
4400 because you multiply 5000 with 0.88 to get your answer.
