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Karolina [17]
3 years ago
8

What is the mean of 110,108,98,60,and 139

Mathematics
2 answers:
ArbitrLikvidat [17]3 years ago
6 0
<span>✡ Answer: </span><span>103 ✡

- - Solve to find the mean:
Add all the number up:
110+108+98+60+139
=515
Divide by 5 since there are 5 numbers.
515/5=103

</span>
✡Hope this helps<span>✡</span>
nata0808 [166]3 years ago
4 0
I think the answer, is. the 104 or 103 its something. like that
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A bird leaves its nest and travels 20 miles per hour downwind for x hours. On the return trip, the bird travels 4 miles per hour
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Answer:

The correct answers are:

A) 60 miles; and B) 3.375 hours.

Explanation:

We will use the equation d = rt for this.

For the first leg of the trip, the bird travels 20 miles per hour for x hours.  This gives us the equation

d = 20x

For the return trip, the bird travels 4 miles per hour slower, so 20-4 = 16 miles per hour.  He also travels 6 miles less than the return distance, for x hours:

d-6 = 16x

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d-6+6 = 16x+6

d = 16x+6

We will set the two equations equal to one another, since they both equal d:

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20x-16x = 16x+6-16x

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4x/4 = 6/4

x = 1.5

He travels for 1.5 hours both times.

The first time, 1.5 hours at 20 miles per hour is:

d = 1.5(20) = 30 miles

The original trip is 30 miles.  This makes the entire trip 30(2) = 60 miles.

On the return trip, he travels 30-6 = 24 miles at 16 miles per hour:

24 = 16x

Divide both sides by 16:

24/16 = 16x/16

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If he goes 24 miles in 1.5 hours at 16 miles per hour, we can use a proportion to find the time it takes for the entire return trip:

24/1.5 = 30/x

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24*x = 1.5(30)

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24x/24 = 45/24

x = 1.875

This gives him a total time of 1.5+1.875 = 3.375 hours

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