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koban [17]
3 years ago
8

A dolphin swam 712 miles in 38 hour. What was its average speed in miles per hour (mph)?

Mathematics
1 answer:
Vilka [71]3 years ago
4 0
To find miles per hour you divide the number of miles by the number of hours

(7 1/2)/(3/8) = (15/2)(8/3) = 20 mph
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Help on this question please!!!
OLga [1]

Answer:

Hello! Here is your answer

Step-by-step explanation:

112=4(28)

a=4b

You can only have one variable so:

Combine b to a:

a-b=84

4b-b=84

Divide both sides by 3:

3b/3=84/3

b=28

But that is not it:

Sum of both cards:

a+b

a=112

b=28

112+28=140

          = 140

I hope I was of help.  If not please let me know! Thank you! Good luck!

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4 years ago
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Reika [66]
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This is the equation for which you want the solution.
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4 years ago
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