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otez555 [7]
2 years ago
15

Jen traveled a distance of 170 miles in 2 hours and 45 minutes. Express her speed, in miles per hour, to the nearest tenth

Mathematics
2 answers:
ddd [48]2 years ago
7 0
61.80 miles per hour is Jen's speed.

Given:
170 miles
2 hours and 45 minutes

2 hours and 45 minutes is 2 45/60 in fraction and can be simplified to 2 3/4 in fraction. 
2 hours and 45 minutes is 2.75 in decimal.  

Let us use the decimal form for our time:

Speed = distance / time
            = 170 miles / 2.75 hours
Speed = 61.818 miles per hour

61.818 miles per hour rounded to the nearest tenth is 61.80 miles per hour.
Vlad [161]2 years ago
6 0
Speed= distance /time
distnace=170 miles
t=2 hours + 45 minutes *(1 hora / 60 minutes=2 hours + 0.75 hours=2.75 hours.

Speed=170 mile / 2.75 hours=61.818...miles/hour≈61.8 miles/hour.

Solution: 61.8 miles/hour.
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